51615660414 has 32 divisors (see below), whose sum is σ = 108679104000. Its totient is φ = 16297498944.

The previous prime is 51615660407. The next prime is 51615660419. The reversal of 51615660414 is 41406651615.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51615660419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 968002 + ... + 1019930.

It is an arithmetic number, because the mean of its divisors is an integer number (3396222000).

Almost surely, 2^51615660414 is an apocalyptic number.

51615660414 is an abundant number, since it is smaller than the sum of its proper divisors (57063443586).

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

51615660414 is a wasteful number, since it uses less digits than its factorization.

51615660414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60672.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 51615660414 in words is "fifty-one billion, six hundred fifteen million, six hundred sixty thousand, four hundred fourteen".