5115566660 has 12 divisors (see below), whose sum is σ = 10742690028. Its totient is φ = 2046226656.

The previous prime is 5115566657. The next prime is 5115566671. The reversal of 5115566660 is 666655115.

It can be written as a sum of positive squares in 2 ways, for example, as 1949928964 + 3165637696 = 44158^2 + 56264^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127889147 + ... + 127889186.

It is an arithmetic number, because the mean of its divisors is an integer number (895224169).

Almost surely, 2^5115566660 is an apocalyptic number.

It is an amenable number.

5115566660 is an abundant number, since it is smaller than the sum of its proper divisors (5627123368).

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

5115566660 is a wasteful number, since it uses less digits than its factorization.

5115566660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255778342 (or 255778340 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 5115566660 is about 71523.1896660097. The cubic root of 5115566660 is about 1723.0501426709.

The spelling of 5115566660 in words is "five billion, one hundred fifteen million, five hundred sixty-six thousand, six hundred sixty".