65766518792 has 16 divisors (see below), whose sum is σ = 132797778540. Its totient is φ = 30353777856.

The previous prime is 65766518791. The next prime is 65766518819. The reversal of 65766518792 is 29781566756.

It can be written as a sum of positive squares in 2 ways, for example, as 46201782916 + 19564735876 = 214946^2 + 139874^2 .

It is not an unprimeable number, because it can be changed into a prime (65766518791) 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, 316185083 + ... + 316185290.

Almost surely, 2^65766518792 is an apocalyptic number.

It is an amenable number.

65766518792 is an abundant number, since it is smaller than the sum of its proper divisors (67031259748).

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

65766518792 is a wasteful number, since it uses less digits than its factorization.

65766518792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632370392 (or 632370388 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 62.

The spelling of 65766518792 in words is "sixty-five billion, seven hundred sixty-six million, five hundred eighteen thousand, seven hundred ninety-two".