51056520960 has 144 divisors (see below), whose sum is σ = 163776644640. Its totient is φ = 13555384320.

The previous prime is 51056520919. The next prime is 51056520973. The reversal of 51056520960 is 6902565015.

It is a congruent number.

It is an unprimeable number.

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, 850330 + ... + 908390.

It is an arithmetic number, because the mean of its divisors is an integer number (1137337810).

Almost surely, 2^51056520960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51056520960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81888322320).

51056520960 is an abundant number, since it is smaller than the sum of its proper divisors (112720123680).

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

51056520960 is a wasteful number, since it uses less digits than its factorization.

51056520960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58314 (or 58300 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 51056520960 in words is "fifty-one billion, fifty-six million, five hundred twenty thousand, nine hundred sixty".