64645601316 has 48 divisors (see below), whose sum is σ = 153356101248. Its totient is φ = 21189254400.

The previous prime is 64645601309. The next prime is 64645601323. The reversal of 64645601316 is 61310654646.

It is an interprime number because it is at equal distance from previous prime (64645601309) and next prime (64645601323).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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, 3086656 + ... + 3107528.

It is an arithmetic number, because the mean of its divisors is an integer number (3194918776).

Almost surely, 2^64645601316 is an apocalyptic number.

It is an amenable number.

64645601316 is an abundant number, since it is smaller than the sum of its proper divisors (88710499932).

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

64645601316 is a wasteful number, since it uses less digits than its factorization.

64645601316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25172 (or 25170 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 64645601316 in words is "sixty-four billion, six hundred forty-five million, six hundred one thousand, three hundred sixteen".