139612968778 has 8 divisors (see below), whose sum is σ = 209428747200. Its totient is φ = 69803386380.

The previous prime is 139612968749. The next prime is 139612968823. The reversal of 139612968778 is 877869216931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1492258 + ... + 1583053.

It is an arithmetic number, because the mean of its divisors is an integer number (26178593400).

Almost surely, 2^139612968778 is an apocalyptic number.

139612968778 is a deficient number, since it is larger than the sum of its proper divisors (69815778422).

139612968778 is a wasteful number, since it uses less digits than its factorization.

139612968778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3098012.

The product of its digits is 54867456, while the sum is 67.

The spelling of 139612968778 in words is "one hundred thirty-nine billion, six hundred twelve million, nine hundred sixty-eight thousand, seven hundred seventy-eight".