256551654104 has 32 divisors (see below), whose sum is σ = 493472286720. Its totient is φ = 124983524256.

The previous prime is 256551654101. The next prime is 256551654119. The reversal of 256551654104 is 401456155652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256551654101) 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 7 ways as a sum of consecutive naturals, for example, 1446014 + ... + 1613709.

It is an arithmetic number, because the mean of its divisors is an integer number (15421008960).

Almost surely, 2^256551654104 is an apocalyptic number.

It is an amenable number.

256551654104 is a deficient number, since it is larger than the sum of its proper divisors (236920632616).

256551654104 is a wasteful number, since it uses less digits than its factorization.

256551654104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3059999 (or 3059995 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 256551654104 in words is "two hundred fifty-six billion, five hundred fifty-one million, six hundred fifty-four thousand, one hundred four".