256735116127164 has 24 divisors (see below), whose sum is σ = 601379532725328. Its totient is φ = 85245382266880.

The previous prime is 256735116127153. The next prime is 256735116127199. The reversal of 256735116127164 is 461721611537652.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41623718727 + ... + 41623724894.

It is an arithmetic number, because the mean of its divisors is an integer number (25057480530222).

Almost surely, 2^{256735116127164} is an apocalyptic number.

It is an amenable number.

256735116127164 is an abundant number, since it is smaller than the sum of its proper divisors (344644416598164).

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

256735116127164 is a wasteful number, since it uses less digits than its factorization.

256735116127164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83247443885 (or 83247443883 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 57.

The spelling of 256735116127164 in words is "two hundred fifty-six trillion, seven hundred thirty-five billion, one hundred sixteen million, one hundred twenty-seven thousand, one hundred sixty-four".