65664072948 has 24 divisors (see below), whose sum is σ = 153220529728. Its totient is φ = 21887401536.

The previous prime is 65664072911. The next prime is 65664072961. The reversal of 65664072948 is 84927046656.

It is a super-2 number, since 2×65664072948² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 592065 + ... + 694167.

Almost surely, 2^65664072948 is an apocalyptic number.

It is an amenable number.

65664072948 is an abundant number, since it is smaller than the sum of its proper divisors (87556456780).

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

65664072948 is a wasteful number, since it uses less digits than its factorization.

65664072948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155703 (or 155701 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 57.

The spelling of 65664072948 in words is "sixty-five billion, six hundred sixty-four million, seventy-two thousand, nine hundred forty-eight".