13129392621 has 16 divisors (see below), whose sum is σ = 18660024000. Its totient is φ = 8182756608.

The previous prime is 13129392607. The next prime is 13129392629. The reversal of 13129392621 is 12629392131.

13129392621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13129392621 - 2¹⁷ = 13129261549 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13129392621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13129392629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 856291 + ... + 871488.

It is an arithmetic number, because the mean of its divisors is an integer number (1166251500).

Almost surely, 2^13129392621 is an apocalyptic number.

It is an amenable number.

13129392621 is a deficient number, since it is larger than the sum of its proper divisors (5530631379).

13129392621 is a wasteful number, since it uses less digits than its factorization.

13129392621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727948.

The product of its digits is 34992, while the sum is 39.

The spelling of 13129392621 in words is "thirteen billion, one hundred twenty-nine million, three hundred ninety-two thousand, six hundred twenty-one".