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13087555464 = 23329139913441
BaseRepresentation
bin11000011000001010…
…00011111110001000
31020210002112200222110
430030011003332020
5203300403233324
610002355422320
7642215246244
oct141405037610
936702480873
1013087555464
115606647145
122652bb49a0
131307579079
148c223b424
15518e99329
hex30c143f88

13087555464 has 64 divisors (see below), whose sum is σ = 33873840000. Its totient is φ = 4208762880.

The previous prime is 13087555387. The next prime is 13087555487. The reversal of 13087555464 is 46455578031.

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, 966984 + ... + 980424.

It is an arithmetic number, because the mean of its divisors is an integer number (529278750).

Almost surely, 213087555464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13087555464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16936920000).

13087555464 is an abundant number, since it is smaller than the sum of its proper divisors (20786284536).

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

13087555464 is a wasteful number, since it uses less digits than its factorization.

13087555464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14878 (or 14874 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 48.

The spelling of 13087555464 in words is "thirteen billion, eighty-seven million, five hundred fifty-five thousand, four hundred sixty-four".

Divisors: 1 2 3 4 6 8 12 24 29 58 87 116 174 232 348 696 1399 2798 4197 5596 8394 11192 13441 16788 26882 33576 40323 40571 53764 80646 81142 107528 121713 161292 162284 243426 322584 324568 389789 486852 779578 973704 1169367 1559156 2338734 3118312 4677468 9354936 18803959 37607918 56411877 75215836 112823754 150431672 225647508 451295016 545314811 1090629622 1635944433 2181259244 3271888866 4362518488 6543777732 13087555464