256632071442131 has 8 divisors (see below), whose sum is σ = 319956868291584. Its totient is φ = 199973042682120.

The previous prime is 256632071442107. The next prime is 256632071442179. The reversal of 256632071442131 is 131244170236652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256632071442131 - 2⁶ = 256632071442067 is a prime.

It is a super-2 number, since 2×256632071442131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256632071442181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1666442022275 + ... + 1666442022428.

It is an arithmetic number, because the mean of its divisors is an integer number (39994608536448).

Almost surely, 2^{256632071442131} is an apocalyptic number.

256632071442131 is a deficient number, since it is larger than the sum of its proper divisors (63324796849453).

256632071442131 is a wasteful number, since it uses less digits than its factorization.

256632071442131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332884044721.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 256632071442131 in words is "two hundred fifty-six trillion, six hundred thirty-two billion, seventy-one million, four hundred forty-two thousand, one hundred thirty-one".