64625534616 has 16 divisors (see below), whose sum is σ = 161563836600. Its totient is φ = 21541844864.

The previous prime is 64625534599. The next prime is 64625534621. The reversal of 64625534616 is 61643552646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1346365281 + ... + 1346365328.

Almost surely, 2^64625534616 is an apocalyptic number.

It is an amenable number.

64625534616 is an abundant number, since it is smaller than the sum of its proper divisors (96938301984).

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

64625534616 is a wasteful number, since it uses less digits than its factorization.

64625534616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692730618 (or 2692730614 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 48.

The spelling of 64625534616 in words is "sixty-four billion, six hundred twenty-five million, five hundred thirty-four thousand, six hundred sixteen".