256132637630 has 32 divisors (see below), whose sum is σ = 465408998208. Its totient is φ = 101483020800.

The previous prime is 256132637627. The next prime is 256132637633. The reversal of 256132637630 is 36736231652.

It is an interprime number because it is at equal distance from previous prime (256132637627) and next prime (256132637633).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256132637633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1761815 + ... + 1901645.

It is an arithmetic number, because the mean of its divisors is an integer number (14544031194).

Almost surely, 2^256132637630 is an apocalyptic number.

256132637630 is a deficient number, since it is larger than the sum of its proper divisors (209276360578).

256132637630 is a wasteful number, since it uses less digits than its factorization.

256132637630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141572.

The product of its (nonzero) digits is 816480, while the sum is 44.

The spelling of 256132637630 in words is "two hundred fifty-six billion, one hundred thirty-two million, six hundred thirty-seven thousand, six hundred thirty".