13879129137779 has 4 divisors (see below), whose sum is σ = 14035074409080. Its totient is φ = 13723183866480.

The previous prime is 13879129137719. The next prime is 13879129137821. The reversal of 13879129137779 is 97773192197831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13879129137779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13879129137719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77972635517 + ... + 77972635694.

It is an arithmetic number, because the mean of its divisors is an integer number (3508768602270).

Almost surely, 2^{13879129137779} is an apocalyptic number.

13879129137779 is a deficient number, since it is larger than the sum of its proper divisors (155945271301).

13879129137779 is an equidigital number, since it uses as much as digits as its factorization.

13879129137779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155945271300.

The product of its digits is 252047376, while the sum is 74.

The spelling of 13879129137779 in words is "thirteen trillion, eight hundred seventy-nine billion, one hundred twenty-nine million, one hundred thirty-seven thousand, seven hundred seventy-nine".