51332372556 has 24 divisors (see below), whose sum is σ = 119918319360. Its totient is φ = 17090393232.

The previous prime is 51332372489. The next prime is 51332372557. The reversal of 51332372556 is 65527323315.

It is not an unprimeable number, because it can be changed into a prime (51332372557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2539216 + ... + 2559351.

It is an arithmetic number, because the mean of its divisors is an integer number (4996596640).

Almost surely, 2^51332372556 is an apocalyptic number.

It is an amenable number.

51332372556 is an abundant number, since it is smaller than the sum of its proper divisors (68585946804).

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

51332372556 is a wasteful number, since it uses less digits than its factorization.

51332372556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5099413 (or 5099411 counting only the distinct ones).

The product of its digits is 567000, while the sum is 42.

The spelling of 51332372556 in words is "fifty-one billion, three hundred thirty-two million, three hundred seventy-two thousand, five hundred fifty-six".