65166115596 has 12 divisors (see below), whose sum is σ = 152054269752. Its totient is φ = 21722038528.

The previous prime is 65166115571. The next prime is 65166115613. The reversal of 65166115596 is 69551166156.

It is a tau number, because it is divible by the number of its divisors (12).

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, 2715254805 + ... + 2715254828.

It is an arithmetic number, because the mean of its divisors is an integer number (12671189146).

Almost surely, 2^65166115596 is an apocalyptic number.

It is an amenable number.

65166115596 is an abundant number, since it is smaller than the sum of its proper divisors (86888154156).

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

65166115596 is a wasteful number, since it uses less digits than its factorization.

65166115596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5430509640 (or 5430509638 counting only the distinct ones).

The product of its digits is 1458000, while the sum is 51.

The spelling of 65166115596 in words is "sixty-five billion, one hundred sixty-six million, one hundred fifteen thousand, five hundred ninety-six".