64316198939 has 16 divisors (see below), whose sum is σ = 68286519840. Its totient is φ = 60491370240.

The previous prime is 64316198917. The next prime is 64316198941. The reversal of 64316198939 is 93989161346.

It is a cyclic number.

It is not a de Polignac number, because 64316198939 - 2²⁴ = 64299421723 is a prime.

It is a super-2 number, since 2×64316198939² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64316198959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29129 + ... + 359834.

It is an arithmetic number, because the mean of its divisors is an integer number (4267907490).

Almost surely, 2^64316198939 is an apocalyptic number.

64316198939 is a deficient number, since it is larger than the sum of its proper divisors (3970320901).

64316198939 is a wasteful number, since it uses less digits than its factorization.

64316198939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389150.

The product of its digits is 7558272, while the sum is 59.

The spelling of 64316198939 in words is "sixty-four billion, three hundred sixteen million, one hundred ninety-eight thousand, nine hundred thirty-nine".