51616644140616 has 32 divisors (see below), whose sum is σ = 130859097825600. Its totient is φ = 16963216383680.

The previous prime is 51616644140609. The next prime is 51616644140627. The reversal of 51616644140616 is 61604144661615.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15145727211 + ... + 15145730618.

It is an arithmetic number, because the mean of its divisors is an integer number (4089346807050).

Almost surely, 2^{51616644140616} is an apocalyptic number.

It is an amenable number.

51616644140616 is an abundant number, since it is smaller than the sum of its proper divisors (79242453684984).

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

51616644140616 is a wasteful number, since it uses less digits than its factorization.

51616644140616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30291457909 (or 30291457905 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 51616644140616 in words is "fifty-one trillion, six hundred sixteen billion, six hundred forty-four million, one hundred forty thousand, six hundred sixteen".