256924619670 has 32 divisors (see below), whose sum is σ = 616689925632. Its totient is φ = 68505360992.

The previous prime is 256924619659. The next prime is 256924619687. The reversal of 256924619670 is 76916429652.

It is a self number, because there is not a number n which added to its sum of digits gives 256924619670.

It is a congruent number.

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, 224052 + ... + 751031.

It is an arithmetic number, because the mean of its divisors is an integer number (19271560176).

Almost surely, 2^256924619670 is an apocalyptic number.

256924619670 is an abundant number, since it is smaller than the sum of its proper divisors (359765305962).

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

256924619670 is a wasteful number, since it uses less digits than its factorization.

256924619670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983876.

The product of its (nonzero) digits is 9797760, while the sum is 57.

The spelling of 256924619670 in words is "two hundred fifty-six billion, nine hundred twenty-four million, six hundred nineteen thousand, six hundred seventy".