139578374879 has 16 divisors (see below), whose sum is σ = 145336550400. Its totient is φ = 133939896480.

The previous prime is 139578374743. The next prime is 139578374899. The reversal of 139578374879 is 978473875931.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139578374879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139578374899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3795422 + ... + 3832020.

It is an arithmetic number, because the mean of its divisors is an integer number (9083534400).

Almost surely, 2^139578374879 is an apocalyptic number.

139578374879 is a deficient number, since it is larger than the sum of its proper divisors (5758175521).

139578374879 is a wasteful number, since it uses less digits than its factorization.

139578374879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38230.

The product of its digits is 320060160, while the sum is 71.

The spelling of 139578374879 in words is "one hundred thirty-nine billion, five hundred seventy-eight million, three hundred seventy-four thousand, eight hundred seventy-nine".