64164339738 has 24 divisors (see below), whose sum is σ = 141379056000. Its totient is φ = 21025602504.

The previous prime is 64164339727. The next prime is 64164339763. The reversal of 64164339738 is 83793346146.

It is a happy number.

64164339738 is a `hidden beast` number, since 64 + 164 + 3 + 397 + 38 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30208138 + ... + 30210261.

It is an arithmetic number, because the mean of its divisors is an integer number (5890794000).

Almost surely, 2^64164339738 is an apocalyptic number.

64164339738 is an abundant number, since it is smaller than the sum of its proper divisors (77214716262).

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

64164339738 is a wasteful number, since it uses less digits than its factorization.

64164339738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60418466 (or 60418463 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The spelling of 64164339738 in words is "sixty-four billion, one hundred sixty-four million, three hundred thirty-nine thousand, seven hundred thirty-eight".