51516487454616 has 96 divisors (see below), whose sum is σ = 139747020076560. Its totient is φ = 17144704394496.

The previous prime is 51516487454599. The next prime is 51516487454623. The reversal of 51516487454616 is 61645478461515.

51516487454616 is a `hidden beast` number, since 5 + 1 + 5 + 1 + 6 + 4 + 8 + 7 + 4 + 5 + 4 + 616 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198428346 + ... + 198687798.

Almost surely, 2^{51516487454616} is an apocalyptic number.

It is an amenable number.

51516487454616 is an abundant number, since it is smaller than the sum of its proper divisors (88230532621944).

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

51516487454616 is a wasteful number, since it uses less digits than its factorization.

51516487454616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263865 (or 263858 counting only the distinct ones).

The product of its digits is 96768000, while the sum is 63.

The spelling of 51516487454616 in words is "fifty-one trillion, five hundred sixteen billion, four hundred eighty-seven million, four hundred fifty-four thousand, six hundred sixteen".