139078787014655 has 8 divisors (see below), whose sum is σ = 167035146399792. Its totient is φ = 111169294956928.

The previous prime is 139078787014603. The next prime is 139078787014679. The reversal of 139078787014655 is 556410787870931.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 139078787014655 - 2²⁶ = 139078719905791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11716825322 + ... + 11716837191.

It is an arithmetic number, because the mean of its divisors is an integer number (20879393299974).

Almost surely, 2^{139078787014655} is an apocalyptic number.

139078787014655 is a deficient number, since it is larger than the sum of its proper divisors (27956359385137).

139078787014655 is a wasteful number, since it uses less digits than its factorization.

139078787014655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23433663705.

The product of its (nonzero) digits is 355622400, while the sum is 71.

The spelling of 139078787014655 in words is "one hundred thirty-nine trillion, seventy-eight billion, seven hundred eighty-seven million, fourteen thousand, six hundred fifty-five".