51269594472 has 72 divisors (see below), whose sum is σ = 139457056050. Its totient is φ = 17015868864.

The previous prime is 51269594429. The next prime is 51269594489. The reversal of 51269594472 is 27449596215.

It is a happy number.

51269594472 is a `hidden beast` number, since 5 + 1 + 2 + 6 + 9 + 594 + 47 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 50411924676 + 857669796 = 224526^2 + 29286^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31510923 + ... + 31512549.

Almost surely, 2^51269594472 is an apocalyptic number.

It is an amenable number.

51269594472 is an abundant number, since it is smaller than the sum of its proper divisors (88187461578).

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

51269594472 is a wasteful number, since it uses less digits than its factorization.

51269594472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535 (or 1901 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 51269594472 in words is "fifty-one billion, two hundred sixty-nine million, five hundred ninety-four thousand, four hundred seventy-two".