139078787014657 has 4 divisors (see below), whose sum is σ = 158947185159616. Its totient is φ = 119210388869700.

The previous prime is 139078787014603. The next prime is 139078787014679. The reversal of 139078787014657 is 756410787870931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 139078787014657 - 2¹¹ = 139078787012609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139078787014657.

It is not an unprimeable number, because it can be changed into a prime (139078707014657) 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 3 ways as a sum of consecutive naturals, for example, 9934199072469 + ... + 9934199072482.

It is an arithmetic number, because the mean of its divisors is an integer number (39736796289904).

Almost surely, 2^{139078787014657} is an apocalyptic number.

It is an amenable number.

139078787014657 is a deficient number, since it is larger than the sum of its proper divisors (19868398144959).

139078787014657 is an equidigital number, since it uses as much as digits as its factorization.

139078787014657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19868398144958.

The product of its (nonzero) digits is 497871360, while the sum is 73.

The spelling of 139078787014657 in words is "one hundred thirty-nine trillion, seventy-eight billion, seven hundred eighty-seven million, fourteen thousand, six hundred fifty-seven".