65975985812 has 12 divisors (see below), whose sum is σ = 125954154816. Its totient is φ = 29989084440.

The previous prime is 65975985781. The next prime is 65975985821. The reversal of 65975985812 is 21858957956.

It is a congruent number.

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, 749727068 + ... + 749727155.

It is an arithmetic number, because the mean of its divisors is an integer number (10496179568).

Almost surely, 2^65975985812 is an apocalyptic number.

It is an amenable number.

65975985812 is a deficient number, since it is larger than the sum of its proper divisors (59978169004).

65975985812 is a wasteful number, since it uses less digits than its factorization.

65975985812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499454238 (or 1499454236 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 65.

The spelling of 65975985812 in words is "sixty-five billion, nine hundred seventy-five million, nine hundred eighty-five thousand, eight hundred twelve".