256544117106 has 64 divisors (see below), whose sum is σ = 547963895808. Its totient is φ = 79791573248.

The previous prime is 256544117101. The next prime is 256544117177. The reversal of 256544117106 is 601711445652.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (256544117101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6504361 + ... + 6543683.

It is an arithmetic number, because the mean of its divisors is an integer number (8561935872).

Almost surely, 2^256544117106 is an apocalyptic number.

256544117106 is an abundant number, since it is smaller than the sum of its proper divisors (291419778702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256544117106 is a wasteful number, since it uses less digits than its factorization.

256544117106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39895.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 256544117106 in words is "two hundred fifty-six billion, five hundred forty-four million, one hundred seventeen thousand, one hundred six".