64189424008 has 8 divisors (see below), whose sum is σ = 120355170030. Its totient is φ = 32094712000.

The previous prime is 64189423967. The next prime is 64189424021. The reversal of 64189424008 is 80042498146.

It can be written as a sum of positive squares in only one way, i.e., 60859903204 + 3329520804 = 246698^2 + 57702^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4011838993 + ... + 4011839008.

Almost surely, 2^64189424008 is an apocalyptic number.

It is an amenable number.

64189424008 is a deficient number, since it is larger than the sum of its proper divisors (56165746022).

64189424008 is a wasteful number, since it uses less digits than its factorization.

64189424008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8023678007 (or 8023678003 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 64189424008 in words is "sixty-four billion, one hundred eighty-nine million, four hundred twenty-four thousand, eight".