65416521024 has 112 divisors (see below), whose sum is σ = 195465435840. Its totient is φ = 21448005120.

The previous prime is 65416521013. The next prime is 65416521077. The reversal of 65416521024 is 42012561456.

65416521024 is a `hidden beast` number, since 6 + 5 + 416 + 5 + 210 + 24 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 65416521024.

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, 204894 + ... + 415709.

Almost surely, 2^65416521024 is an apocalyptic number.

65416521024 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65416521024 is an abundant number, since it is smaller than the sum of its proper divisors (130048914816).

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

65416521024 is a wasteful number, since it uses less digits than its factorization.

65416521024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620685 (or 620669 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 65416521024 in words is "sixty-five billion, four hundred sixteen million, five hundred twenty-one thousand, twenty-four".