256500535554742 has 8 divisors (see below), whose sum is σ = 385201859376096. Its totient is φ = 128099915762712.

The previous prime is 256500535554737. The next prime is 256500535554847. The reversal of 256500535554742 is 247455535005652.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75176005198 + ... + 75176008609.

It is an arithmetic number, because the mean of its divisors is an integer number (48150232422012).

Almost surely, 2^{256500535554742} is an apocalyptic number.

256500535554742 is a deficient number, since it is larger than the sum of its proper divisors (128701323821354).

256500535554742 is a wasteful number, since it uses less digits than its factorization.

256500535554742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150352014662.

The product of its (nonzero) digits is 126000000, while the sum is 58.

The spelling of 256500535554742 in words is "two hundred fifty-six trillion, five hundred billion, five hundred thirty-five million, five hundred fifty-four thousand, seven hundred forty-two".