51274364256 has 48 divisors (see below), whose sum is σ = 149550231600. Its totient is φ = 17091454464.

The previous prime is 51274364237. The next prime is 51274364257. The reversal of 51274364256 is 65246347215.

51274364256 is a `hidden beast` number, since 5 + 127 + 436 + 42 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51274364257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29671801 + ... + 29673528.

It is an arithmetic number, because the mean of its divisors is an integer number (3115629825).

Almost surely, 2^51274364256 is an apocalyptic number.

It is an amenable number.

51274364256 is an abundant number, since it is smaller than the sum of its proper divisors (98275867344).

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

51274364256 is a wasteful number, since it uses less digits than its factorization.

51274364256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59345348 (or 59345334 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The spelling of 51274364256 in words is "fifty-one billion, two hundred seventy-four million, three hundred sixty-four thousand, two hundred fifty-six".