64542317616 has 100 divisors (see below), whose sum is σ = 213490535632. Its totient is φ = 18440659584.

The previous prime is 64542317597. The next prime is 64542317627. The reversal of 64542317616 is 61671324546.

64542317616 is a `hidden beast` number, since 6 + 4 + 5 + 4 + 23 + 1 + 7 + 616 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3548155 + ... + 3566298.

Almost surely, 2^64542317616 is an apocalyptic number.

It is an amenable number.

64542317616 is an abundant number, since it is smaller than the sum of its proper divisors (148948218016).

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

64542317616 is a wasteful number, since it uses less digits than its factorization.

64542317616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7114480 (or 7114465 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The spelling of 64542317616 in words is "sixty-four billion, five hundred forty-two million, three hundred seventeen thousand, six hundred sixteen".