64320308164 has 48 divisors (see below), whose sum is σ = 133446458880. Its totient is φ = 26553047040.

The previous prime is 64320308147. The next prime is 64320308177. The reversal of 64320308164 is 46180302346.

64320308164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 263917 + ... + 445300.

It is an arithmetic number, because the mean of its divisors is an integer number (2780134560).

Almost surely, 2^64320308164 is an apocalyptic number.

It is an amenable number.

64320308164 is an abundant number, since it is smaller than the sum of its proper divisors (69126150716).

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

64320308164 is a wasteful number, since it uses less digits than its factorization.

64320308164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709348 (or 709346 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 64320308164 in words is "sixty-four billion, three hundred twenty million, three hundred eight thousand, one hundred sixty-four".