256253047158 has 16 divisors (see below), whose sum is σ = 539480099520. Its totient is φ = 80922014856.

The previous prime is 256253047157. The next prime is 256253047187. The reversal of 256253047158 is 851740352652.

256253047158 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256253047157) 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, 1123916760 + ... + 1123916987.

It is an arithmetic number, because the mean of its divisors is an integer number (33717506220).

Almost surely, 2^256253047158 is an apocalyptic number.

256253047158 is an abundant number, since it is smaller than the sum of its proper divisors (283227052362).

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

256253047158 is a wasteful number, since it uses less digits than its factorization.

256253047158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247833771.

The product of its (nonzero) digits is 2016000, while the sum is 48.

The spelling of 256253047158 in words is "two hundred fifty-six billion, two hundred fifty-three million, forty-seven thousand, one hundred fifty-eight".