51551615116 has 24 divisors (see below), whose sum is σ = 95575908960. Its totient is φ = 24245920512.

The previous prime is 51551615113. The next prime is 51551615117. The reversal of 51551615116 is 61151615515.

It is not an unprimeable number, because it can be changed into a prime (51551615113) 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, 91351 + ... + 333838.

It is an arithmetic number, because the mean of its divisors is an integer number (3982329540).

Almost surely, 2^51551615116 is an apocalyptic number.

It is an amenable number.

51551615116 is a deficient number, since it is larger than the sum of its proper divisors (44024293844).

51551615116 is a wasteful number, since it uses less digits than its factorization.

51551615116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426993 (or 426991 counting only the distinct ones).

The product of its digits is 22500, while the sum is 37.

The spelling of 51551615116 in words is "fifty-one billion, five hundred fifty-one million, six hundred fifteen thousand, one hundred sixteen".