256972537941 has 48 divisors (see below), whose sum is σ = 399775641408. Its totient is φ = 146397888000.

The previous prime is 256972537901. The next prime is 256972537949. The reversal of 256972537941 is 149735279652.

It is not a de Polignac number, because 256972537941 - 2⁷ = 256972537813 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256972537949) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91741741 + ... + 91744541.

It is an arithmetic number, because the mean of its divisors is an integer number (8328659196).

Almost surely, 2^256972537941 is an apocalyptic number.

256972537941 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

256972537941 is a deficient number, since it is larger than the sum of its proper divisors (142803103467).

256972537941 is a wasteful number, since it uses less digits than its factorization.

256972537941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4482 (or 4475 counting only the distinct ones).

The product of its digits is 28576800, while the sum is 60.

The spelling of 256972537941 in words is "two hundred fifty-six billion, nine hundred seventy-two million, five hundred thirty-seven thousand, nine hundred forty-one".