64992946218 has 16 divisors (see below), whose sum is σ = 133499025120. Its totient is φ = 21078793296.

The previous prime is 64992946189. The next prime is 64992946223. The reversal of 64992946218 is 81264929946.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146380288 + ... + 146380731.

It is an arithmetic number, because the mean of its divisors is an integer number (8343689070).

Almost surely, 2^64992946218 is an apocalyptic number.

64992946218 is an abundant number, since it is smaller than the sum of its proper divisors (68506078902).

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

64992946218 is a wasteful number, since it uses less digits than its factorization.

64992946218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292761061.

The product of its digits is 13436928, while the sum is 60.

The spelling of 64992946218 in words is "sixty-four billion, nine hundred ninety-two million, nine hundred forty-six thousand, two hundred eighteen".