256936709832 has 64 divisors (see below), whose sum is σ = 737617363200. Its totient is φ = 73761733440.

The previous prime is 256936709767. The next prime is 256936709867. The reversal of 256936709832 is 238907639652.

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, 25606698 + ... + 25616729.

It is an arithmetic number, because the mean of its divisors is an integer number (11525271300).

Almost surely, 2^256936709832 is an apocalyptic number.

256936709832 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256936709832 is an abundant number, since it is smaller than the sum of its proper divisors (480680653368).

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

256936709832 is a wasteful number, since it uses less digits than its factorization.

256936709832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51223466 (or 51223462 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 60.

The spelling of 256936709832 in words is "two hundred fifty-six billion, nine hundred thirty-six million, seven hundred nine thousand, eight hundred thirty-two".