51756688722 has 64 divisors (see below), whose sum is σ = 109111898880. Its totient is φ = 16334782464.

The previous prime is 51756688691. The next prime is 51756688757. The reversal of 51756688722 is 22788665715.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15545554 + ... + 15548882.

It is an arithmetic number, because the mean of its divisors is an integer number (1704873420).

Almost surely, 2^51756688722 is an apocalyptic number.

51756688722 is an abundant number, since it is smaller than the sum of its proper divisors (57355210158).

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

51756688722 is a wasteful number, since it uses less digits than its factorization.

51756688722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467.

The product of its digits is 11289600, while the sum is 57.

The spelling of 51756688722 in words is "fifty-one billion, seven hundred fifty-six million, six hundred eighty-eight thousand, seven hundred twenty-two".