12911855760 has 160 divisors (see below), whose sum is σ = 45313706880. Its totient is φ = 3378166272.

The previous prime is 12911855653. The next prime is 12911855777. The reversal of 12911855760 is 6755811921.

12911855760 is a `hidden beast` number, since 1 + 2 + 91 + 1 + 8 + 557 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 58087 + ... + 170873.

It is an arithmetic number, because the mean of its divisors is an integer number (283210668).

Almost surely, 2^12911855760 is an apocalyptic number.

12911855760 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 12911855760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22656853440).

12911855760 is an abundant number, since it is smaller than the sum of its proper divisors (32401851120).

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

12911855760 is a wasteful number, since it uses less digits than its factorization.

12911855760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112862 (or 112850 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 45.

The spelling of 12911855760 in words is "twelve billion, nine hundred eleven million, eight hundred fifty-five thousand, seven hundred sixty".