65665379764 has 12 divisors (see below), whose sum is σ = 114921133600. Its totient is φ = 32830770168.

The previous prime is 65665379743. The next prime is 65665379779. The reversal of 65665379764 is 46797356656.

It is a junction number, because it is equal to n+sod(n) for n = 65665379696 and 65665379705.

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, 401544 + ... + 540895.

Almost surely, 2^65665379764 is an apocalyptic number.

It is an amenable number.

65665379764 is a deficient number, since it is larger than the sum of its proper divisors (49255753836).

65665379764 is a wasteful number, since it uses less digits than its factorization.

65665379764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959862 (or 959860 counting only the distinct ones).

The product of its digits is 171460800, while the sum is 64.

The spelling of 65665379764 in words is "sixty-five billion, six hundred sixty-five million, three hundred seventy-nine thousand, seven hundred sixty-four".