256523332509696 has 224 divisors, whose sum is σ = 827722256647680. Its totient is φ = 68981063417856.

The previous prime is 256523332509667. The next prime is 256523332509707. The reversal of 256523332509696 is 696905233325652.

It is a tau number, because it is divible by the number of its divisors (224).

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, 40932436 + ... + 46781523.

Almost surely, 2^{256523332509696} is an apocalyptic number.

It is an amenable number.

256523332509696 is an abundant number, since it is smaller than the sum of its proper divisors (571198924137984).

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

256523332509696 is an equidigital number, since it uses as much as digits as its factorization.

256523332509696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87714012 (or 87713988 counting only the distinct ones).

The product of its (nonzero) digits is 472392000, while the sum is 66.

The spelling of 256523332509696 in words is "two hundred fifty-six trillion, five hundred twenty-three billion, three hundred thirty-two million, five hundred nine thousand, six hundred ninety-six".