256477674610436 has 24 divisors (see below), whose sum is σ = 495900567792000. Its totient is φ = 115447751230592.

The previous prime is 256477674610397. The next prime is 256477674610441. The reversal of 256477674610436 is 634016476774652.

It is a super-2 number, since 2×256477674610436² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (68).

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, 81994139936 + ... + 81994143063.

It is an arithmetic number, because the mean of its divisors is an integer number (20662523658000).

Almost surely, 2^{256477674610436} is an apocalyptic number.

It is an amenable number.

256477674610436 is a deficient number, since it is larger than the sum of its proper divisors (239422893181564).

256477674610436 is a wasteful number, since it uses less digits than its factorization.

256477674610436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163988283043 (or 163988283041 counting only the distinct ones).

The product of its (nonzero) digits is 853493760, while the sum is 68.

The spelling of 256477674610436 in words is "two hundred fifty-six trillion, four hundred seventy-seven billion, six hundred seventy-four million, six hundred ten thousand, four hundred thirty-six".