256623245212677 has 24 divisors (see below), whose sum is σ = 398102526644256. Its totient is φ = 146614356893088.

The previous prime is 256623245212669. The next prime is 256623245212729. The reversal of 256623245212677 is 776212542326652.

It is a happy number.

256623245212677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256623245212677 - 2³ = 256623245212669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 256623245212677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256623245212667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162889063 + ... + 164456964.

It is an arithmetic number, because the mean of its divisors is an integer number (16587605276844).

Almost surely, 2^{256623245212677} is an apocalyptic number.

It is an amenable number.

256623245212677 is a deficient number, since it is larger than the sum of its proper divisors (141479281431579).

256623245212677 is a wasteful number, since it uses less digits than its factorization.

256623245212677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327351377 (or 327351370 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 60.

The spelling of 256623245212677 in words is "two hundred fifty-six trillion, six hundred twenty-three billion, two hundred forty-five million, two hundred twelve thousand, six hundred seventy-seven".