256626132235520 has 72 divisors (see below), whose sum is σ = 618380619905664. Its totient is φ = 102035779438592.

The previous prime is 256626132235513. The next prime is 256626132235597. The reversal of 256626132235520 is 25532231626652.

256626132235520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 600053204 + ... + 600480723.

It is an arithmetic number, because the mean of its divisors is an integer number (8588619720912).

Almost surely, 2^{256626132235520} is an apocalyptic number.

256626132235520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256626132235520 is an abundant number, since it is smaller than the sum of its proper divisors (361754487670144).

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

256626132235520 is a wasteful number, since it uses less digits than its factorization.

256626132235520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200534115 (or 1200534101 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 50.

The spelling of 256626132235520 in words is "two hundred fifty-six trillion, six hundred twenty-six billion, one hundred thirty-two million, two hundred thirty-five thousand, five hundred twenty".