516616616615 has 12 divisors (see below), whose sum is σ = 681421587672. Its totient is φ = 375721175280.

The previous prime is 516616616561. The next prime is 516616616627.

516616616615 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 516616616615 - 2²⁰ = 516615568039 is a prime.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 426955277 + ... + 426956486.

It is an arithmetic number, because the mean of its divisors is an integer number (56785132306).

Almost surely, 2^516616616615 is an apocalyptic number.

516616616615 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

516616616615 is a deficient number, since it is larger than the sum of its proper divisors (164804971057).

516616616615 is a wasteful number, since it uses less digits than its factorization.

516616616615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853911790 (or 853911779 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 50.

The spelling of 516616616615 in words is "five hundred sixteen billion, six hundred sixteen million, six hundred sixteen thousand, six hundred fifteen".