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11668420460 = 2253141394547
BaseRepresentation
bin10101101110111110…
…11111011101101100
31010010012012011201202
422313133133131230
5142344103423320
65205502425032
7562103636354
oct126737373554
933105164652
1011668420460
114a48578aa4
122317892178
13113c55ab08
147c9987b64
154845c4b75
hex2b77df76c

11668420460 has 48 divisors (see below), whose sum is σ = 25305799680. Its totient is φ = 4514723520.

The previous prime is 11668420459. The next prime is 11668420487. The reversal of 11668420460 is 6402486611.

It is a super-2 number, since 2×116684204602 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2563907 + ... + 2568453.

It is an arithmetic number, because the mean of its divisors is an integer number (527204160).

Almost surely, 211668420460 is an apocalyptic number.

11668420460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11668420460 is an abundant number, since it is smaller than the sum of its proper divisors (13637379220).

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

11668420460 is a wasteful number, since it uses less digits than its factorization.

11668420460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8726 (or 8724 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 11668420460 in words is "eleven billion, six hundred sixty-eight million, four hundred twenty thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 4139 4547 8278 9094 16556 18188 20695 22735 41390 45470 82780 90940 128309 140957 256618 281914 513236 563828 641545 704785 1283090 1409570 2566180 2819140 18820033 37640066 75280132 94100165 188200330 376400660 583421023 1166842046 2333684092 2917105115 5834210230 11668420460