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16466631440260 = 2253759460381937
BaseRepresentation
bin1110111110011110111110…
…1101111011011110000100
32011022012020212011001100011
43233213233231323132010
54124242130122042020
655004355511200004
73316450322556331
oct357475755733604
964265225131304
1016466631440260
115279506189071
121a1b415676004
13925a48405881
1440cdbc591988
151d85052dd35a
hexef9efb7b784

16466631440260 has 96 divisors (see below), whose sum is σ = 36124746779520. Its totient is φ = 6298568460288.

The previous prime is 16466631440227. The next prime is 16466631440299. The reversal of 16466631440260 is 6204413666461.

It is a super-2 number, since 2×164666314402602 (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200926012 + ... + 201007948.

It is an arithmetic number, because the mean of its divisors is an integer number (376299445620).

Almost surely, 216466631440260 is an apocalyptic number.

16466631440260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16466631440260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18062373389760).

16466631440260 is an abundant number, since it is smaller than the sum of its proper divisors (19658115339260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16466631440260 is a wasteful number, since it uses less digits than its factorization.

16466631440260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86645 (or 86643 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 49.

The spelling of 16466631440260 in words is "sixteen trillion, four hundred sixty-six billion, six hundred thirty-one million, four hundred forty thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 37 59 74 118 148 185 236 295 370 590 740 1180 2183 4366 4603 8732 9206 10915 18412 21830 23015 43660 46030 81937 92060 163874 170311 271577 327748 340622 409685 543154 681244 819370 851555 1086308 1357885 1638740 1703110 2715770 3031669 3406220 4834283 5431540 6063338 9668566 10048349 12126676 15158345 19337132 20096698 24171415 30316690 40193396 48342830 50241745 60633380 96685660 100483490 178868471 200966980 357736942 377156011 715473884 754312022 894342355 1508624044 1788684710 1885780055 3577369420 3771560110 7543120220 13954772407 22252204649 27909544814 44504409298 55819089628 69773862035 89008818596 111261023245 139547724070 222522046490 279095448140 445044092980 823331572013 1646663144026 3293326288052 4116657860065 8233315720130 16466631440260