65718497684 has 48 divisors (see below), whose sum is σ = 132163508736. Its totient is φ = 28009740000.

The previous prime is 65718497659. The next prime is 65718497717. The reversal of 65718497684 is 48679481756.

It is a self number, because there is not a number n which added to its sum of digits gives 65718497684.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4793279 + ... + 4806969.

It is an arithmetic number, because the mean of its divisors is an integer number (2753406432).

Almost surely, 2^65718497684 is an apocalyptic number.

It is an amenable number.

65718497684 is an abundant number, since it is smaller than the sum of its proper divisors (66445011052).

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

65718497684 is a wasteful number, since it uses less digits than its factorization.

65718497684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14636 (or 14634 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 65.

The spelling of 65718497684 in words is "sixty-five billion, seven hundred eighteen million, four hundred ninety-seven thousand, six hundred eighty-four".