51372861822 has 32 divisors (see below), whose sum is σ = 115571331360. Its totient is φ = 17124285816.

The previous prime is 51372861803. The next prime is 51372861829. The reversal of 51372861822 is 22816827315.

51372861822 is a `hidden beast` number, since 5 + 1 + 3 + 7 + 2 + 8 + 618 + 22 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51372861829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5868153 + ... + 5876900.

It is an arithmetic number, because the mean of its divisors is an integer number (3611604105).

Almost surely, 2^51372861822 is an apocalyptic number.

51372861822 is an abundant number, since it is smaller than the sum of its proper divisors (64198469538).

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

51372861822 is an equidigital number, since it uses as much as digits as its factorization.

51372861822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11745076 (or 11745058 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The spelling of 51372861822 in words is "fifty-one billion, three hundred seventy-two million, eight hundred sixty-one thousand, eight hundred twenty-two".