51196684572 has 36 divisors (see below), whose sum is σ = 141178737336. Its totient is φ = 15514146720.

The previous prime is 51196684537. The next prime is 51196684663. The reversal of 51196684572 is 27548669115.

It is a happy number.

51196684572 is a `hidden beast` number, since 5 + 1 + 1 + 9 + 6 + 68 + 4 + 572 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×51196684572² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64641883 + ... + 64642674.

Almost surely, 2^51196684572 is an apocalyptic number.

It is an amenable number.

51196684572 is an abundant number, since it is smaller than the sum of its proper divisors (89982052764).

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

51196684572 is a wasteful number, since it uses less digits than its factorization.

51196684572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129284578 (or 129284573 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The spelling of 51196684572 in words is "fifty-one billion, one hundred ninety-six million, six hundred eighty-four thousand, five hundred seventy-two".