65517432768 has 112 divisors (see below), whose sum is σ = 195047616000. Its totient is φ = 21562654464.

The previous prime is 65517432709. The next prime is 65517432769. The reversal of 65517432768 is 86723471556.

65517432768 is a `hidden beast` number, since 6 + 5 + 517 + 43 + 27 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65517432769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103458 + ... + 376481.

Almost surely, 2^65517432768 is an apocalyptic number.

It is an amenable number.

65517432768 is an abundant number, since it is smaller than the sum of its proper divisors (129530183232).

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

65517432768 is a wasteful number, since it uses less digits than its factorization.

65517432768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480039 (or 480023 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 65517432768 in words is "sixty-five billion, five hundred seventeen million, four hundred thirty-two thousand, seven hundred sixty-eight".