51516193188 has 24 divisors (see below), whose sum is σ = 120464084608. Its totient is φ = 17134973856.

The previous prime is 51516193171. The next prime is 51516193189. The reversal of 51516193188 is 88139161515.

It is not an unprimeable number, because it can be changed into a prime (51516193189) 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, 4630531 + ... + 4641642.

Almost surely, 2^51516193188 is an apocalyptic number.

It is an amenable number.

51516193188 is an abundant number, since it is smaller than the sum of its proper divisors (68947891420).

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

51516193188 is a wasteful number, since it uses less digits than its factorization.

51516193188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9272643 (or 9272641 counting only the distinct ones).

The product of its digits is 259200, while the sum is 48.

The spelling of 51516193188 in words is "fifty-one billion, five hundred sixteen million, one hundred ninety-three thousand, one hundred eighty-eight".