51126374572 has 48 divisors (see below), whose sum is σ = 111128691520. Its totient is φ = 20040244992.

The previous prime is 51126374531. The next prime is 51126374587. The reversal of 51126374572 is 27547362115.

It is a happy number.

It is a super-2 number, since 2×51126374572² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604623 + ... + 683974.

Almost surely, 2^51126374572 is an apocalyptic number.

51126374572 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51126374572 is an abundant number, since it is smaller than the sum of its proper divisors (60002316948).

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

51126374572 is a wasteful number, since it uses less digits than its factorization.

51126374572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288730 (or 1288728 counting only the distinct ones).

The product of its digits is 352800, while the sum is 43.

The spelling of 51126374572 in words is "fifty-one billion, one hundred twenty-six million, three hundred seventy-four thousand, five hundred seventy-two".