13929571644 has 48 divisors (see below), whose sum is σ = 32743468800. Its totient is φ = 4608838656.

The previous prime is 13929571637. The next prime is 13929571657. The reversal of 13929571644 is 44617592931.

It is a happy number.

13929571644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 1233777 + ... + 1245015.

It is an arithmetic number, because the mean of its divisors is an integer number (682155600).

Almost surely, 2^13929571644 is an apocalyptic number.

It is an amenable number.

13929571644 is an abundant number, since it is smaller than the sum of its proper divisors (18813897156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13929571644 is a wasteful number, since it uses less digits than its factorization.

13929571644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12002 (or 12000 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The spelling of 13929571644 in words is "thirteen billion, nine hundred twenty-nine million, five hundred seventy-one thousand, six hundred forty-four".