256112703155 has 16 divisors (see below), whose sum is σ = 311831783424. Its totient is φ = 201912522720.

The previous prime is 256112703097. The next prime is 256112703157. The reversal of 256112703155 is 551307211652.

It is not a de Polignac number, because 256112703155 - 2⁸ = 256112702899 is a prime.

It is a super-2 number, since 2×256112703155² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256112703157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1150997 + ... + 1355366.

It is an arithmetic number, because the mean of its divisors is an integer number (19489486464).

Almost surely, 2^256112703155 is an apocalyptic number.

256112703155 is a deficient number, since it is larger than the sum of its proper divisors (55719080269).

256112703155 is a wasteful number, since it uses less digits than its factorization.

256112703155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506666.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 256112703155 in words is "two hundred fifty-six billion, one hundred twelve million, seven hundred three thousand, one hundred fifty-five".