64618452108 has 84 divisors (see below), whose sum is σ = 193766777680. Its totient is φ = 18462409056.

The previous prime is 64618452077. The next prime is 64618452127. The reversal of 64618452108 is 80125481646.

It is a happy number.

64618452108 is a `hidden beast` number, since 6 + 4 + 618 + 4 + 5 + 21 + 0 + 8 = 666.

64618452108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (84).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1562443 + ... + 1603266.

Almost surely, 2^64618452108 is an apocalyptic number.

It is an amenable number.

64618452108 is an abundant number, since it is smaller than the sum of its proper divisors (129148325572).

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

64618452108 is a wasteful number, since it uses less digits than its factorization.

64618452108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165738 (or 3165721 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 64618452108 in words is "sixty-four billion, six hundred eighteen million, four hundred fifty-two thousand, one hundred eight".