15166516516 has 12 divisors (see below), whose sum is σ = 26555291532. Its totient is φ = 7579290368.

The previous prime is 15166516513. The next prime is 15166516523. The reversal of 15166516516 is 61561566151.

It can be written as a sum of positive squares in 2 ways, for example, as 10980944100 + 4185572416 = 104790^2 + 64696^2 .

It is not an unprimeable number, because it can be changed into a prime (15166516513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 983365 + ... + 998668.

It is an arithmetic number, because the mean of its divisors is an integer number (2212940961).

Almost surely, 2^15166516516 is an apocalyptic number.

It is an amenable number.

15166516516 is a deficient number, since it is larger than the sum of its proper divisors (11388775016).

15166516516 is a wasteful number, since it uses less digits than its factorization.

15166516516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983950 (or 1983948 counting only the distinct ones).

The product of its digits is 162000, while the sum is 43.

The spelling of 15166516516 in words is "fifteen billion, one hundred sixty-six million, five hundred sixteen thousand, five hundred sixteen".