15879290779 has 8 divisors (see below), whose sum is σ = 17920203120. Its totient is φ = 13937935200.

The previous prime is 15879290773. The next prime is 15879290807. The reversal of 15879290779 is 97709297851.

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 15879290779 - 2⁵ = 15879290747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15879290779.

It is not an unprimeable number, because it can be changed into a prime (15879290773) 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 7 ways as a sum of consecutive naturals, for example, 24888852 + ... + 24889489.

It is an arithmetic number, because the mean of its divisors is an integer number (2240025390).

Almost surely, 2^15879290779 is an apocalyptic number.

15879290779 is a deficient number, since it is larger than the sum of its proper divisors (2040912341).

15879290779 is a wasteful number, since it uses less digits than its factorization.

15879290779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49778381.

The product of its (nonzero) digits is 20003760, while the sum is 64.

It can be divided in two parts, 158792 and 90779, that added together give a triangular number (249571 = T₇₀₆).

The spelling of 15879290779 in words is "fifteen billion, eight hundred seventy-nine million, two hundred ninety thousand, seven hundred seventy-nine".