51372722220 has 48 divisors (see below), whose sum is σ = 148803752160. Its totient is φ = 13226999296.

The previous prime is 51372722189. The next prime is 51372722227. The reversal of 51372722220 is 2222727315.

It is not an unprimeable number, because it can be changed into a prime (51372722227) 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, 14760537 + ... + 14764016.

It is an arithmetic number, because the mean of its divisors is an integer number (3100078170).

Almost surely, 2^51372722220 is an apocalyptic number.

It is an amenable number.

51372722220 is an abundant number, since it is smaller than the sum of its proper divisors (97431029940).

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

51372722220 is a wasteful number, since it uses less digits than its factorization.

51372722220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29524594 (or 29524592 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The spelling of 51372722220 in words is "fifty-one billion, three hundred seventy-two million, seven hundred twenty-two thousand, two hundred twenty".