256060358081 has 32 divisors (see below), whose sum is σ = 301357449216. Its totient is φ = 215141256000.

The previous prime is 256060358053. The next prime is 256060358089. The reversal of 256060358081 is 180853060652.

It is a de Polignac number, because none of the positive numbers 2^k-256060358081 is a prime.

It is a super-2 number, since 2×256060358081² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (256060358089) 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 31 ways as a sum of consecutive naturals, for example, 5049191 + ... + 5099651.

It is an arithmetic number, because the mean of its divisors is an integer number (9417420288).

Almost surely, 2^256060358081 is an apocalyptic number.

It is an amenable number.

256060358081 is a deficient number, since it is larger than the sum of its proper divisors (45297091135).

256060358081 is a wasteful number, since it uses less digits than its factorization.

256060358081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51173.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 256060358081 in words is "two hundred fifty-six billion, sixty million, three hundred fifty-eight thousand, eighty-one".