65115516066 has 16 divisors (see below), whose sum is σ = 130306636704. Its totient is φ = 21692571264.

The previous prime is 65115516049. The next prime is 65115516071. The reversal of 65115516066 is 66061551156.

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, 3138991 + ... + 3159666.

It is an arithmetic number, because the mean of its divisors is an integer number (8144164794).

Almost surely, 2^65115516066 is an apocalyptic number.

65115516066 is an abundant number, since it is smaller than the sum of its proper divisors (65191120638).

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

65115516066 is a wasteful number, since it uses less digits than its factorization.

65115516066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6300385.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 65115516066 in words is "sixty-five billion, one hundred fifteen million, five hundred sixteen thousand, sixty-six".