12932705856 has 56 divisors (see below), whose sum is σ = 39106043200. Its totient is φ = 3695058432.

The previous prime is 12932705803. The next prime is 12932705869. The reversal of 12932705856 is 65850723921.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4809931 + ... + 4812618.

It is an arithmetic number, because the mean of its divisors is an integer number (698322200).

Almost surely, 2^12932705856 is an apocalyptic number.

12932705856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12932705856 is an abundant number, since it is smaller than the sum of its proper divisors (26173337344).

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

12932705856 is an equidigital number, since it uses as much as digits as its factorization.

12932705856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9622571 (or 9622561 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 12932705856 in words is "twelve billion, nine hundred thirty-two million, seven hundred five thousand, eight hundred fifty-six".