64323189792 has 36 divisors (see below), whose sum is σ = 182919071790. Its totient is φ = 21441063168.

The previous prime is 64323189787. The next prime is 64323189797. The reversal of 64323189792 is 29798132346.

64323189792 is a `hidden beast` number, since 6 + 432 + 31 + 8 + 97 + 92 = 666.

It is an interprime number because it is at equal distance from previous prime (64323189787) and next prime (64323189797).

It can be written as a sum of positive squares in only one way, i.e., 60675512976 + 3647676816 = 246324^2 + 60396^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×64323189792³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (64323189797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111671917 + ... + 111672492.

Almost surely, 2^64323189792 is an apocalyptic number.

It is an amenable number.

64323189792 is an abundant number, since it is smaller than the sum of its proper divisors (118595881998).

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

64323189792 is a wasteful number, since it uses less digits than its factorization.

64323189792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223344425 (or 223344414 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 64323189792 in words is "sixty-four billion, three hundred twenty-three million, one hundred eighty-nine thousand, seven hundred ninety-two".