51920963256 has 64 divisors (see below), whose sum is σ = 131630637600. Its totient is φ = 17063405568.

The previous prime is 51920963251. The next prime is 51920963267. The reversal of 51920963256 is 65236902915.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51920963251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7279500 + ... + 7286628.

Almost surely, 2^51920963256 is an apocalyptic number.

It is an amenable number.

51920963256 is an abundant number, since it is smaller than the sum of its proper divisors (79709674344).

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

51920963256 is a wasteful number, since it uses less digits than its factorization.

51920963256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11368 (or 11364 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 48.

The spelling of 51920963256 in words is "fifty-one billion, nine hundred twenty million, nine hundred sixty-three thousand, two hundred fifty-six".