64129879196 has 24 divisors (see below), whose sum is σ = 113067417456. Its totient is φ = 31824990080.

The previous prime is 64129879169. The next prime is 64129879207. The reversal of 64129879196 is 69197892146.

It is a super-2 number, since 2×64129879196² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5524070 + ... + 5535666.

It is an arithmetic number, because the mean of its divisors is an integer number (4711142394).

Almost surely, 2^64129879196 is an apocalyptic number.

It is an amenable number.

64129879196 is a deficient number, since it is larger than the sum of its proper divisors (48937538260).

64129879196 is a wasteful number, since it uses less digits than its factorization.

64129879196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21829 (or 21827 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 62.

The spelling of 64129879196 in words is "sixty-four billion, one hundred twenty-nine million, eight hundred seventy-nine thousand, one hundred ninety-six".