129313769279 has 4 divisors (see below), whose sum is σ = 129509403480. Its totient is φ = 129118135080.

The previous prime is 129313769251. The next prime is 129313769317. The reversal of 129313769279 is 972967313921.

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-129313769279 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 (129313769209) 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, 97816109 + ... + 97817430.

It is an arithmetic number, because the mean of its divisors is an integer number (32377350870).

Almost surely, 2^129313769279 is an apocalyptic number.

129313769279 is a deficient number, since it is larger than the sum of its proper divisors (195634201).

129313769279 is an equidigital number, since it uses as much as digits as its factorization.

129313769279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195634200.

The product of its digits is 7715736, while the sum is 59.

The spelling of 129313769279 in words is "one hundred twenty-nine billion, three hundred thirteen million, seven hundred sixty-nine thousand, two hundred seventy-nine".