65727492864 has 72 divisors (see below), whose sum is σ = 190833824832. Its totient is φ = 19917419520.

The previous prime is 65727492847. The next prime is 65727492871. The reversal of 65727492864 is 46829472756.

65727492864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 65727492798 and 65727492807.

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, 3881674 + ... + 3898569.

Almost surely, 2^65727492864 is an apocalyptic number.

65727492864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65727492864 is an abundant number, since it is smaller than the sum of its proper divisors (125106331968).

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

65727492864 is a wasteful number, since it uses less digits than its factorization.

65727492864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7780273 (or 7780259 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 60.

The spelling of 65727492864 in words is "sixty-five billion, seven hundred twenty-seven million, four hundred ninety-two thousand, eight hundred sixty-four".