13991761208 has 16 divisors (see below), whose sum is σ = 26259529560. Its totient is φ = 6989220000.

The previous prime is 13991761193. The next prime is 13991761211. The reversal of 13991761208 is 80216719931.

13991761208 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 3 ways as a sum of consecutive naturals, for example, 823643 + ... + 840458.

Almost surely, 2^13991761208 is an apocalyptic number.

It is an amenable number.

13991761208 is a deficient number, since it is larger than the sum of its proper divisors (12267768352).

13991761208 is a wasteful number, since it uses less digits than its factorization.

13991761208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665158 (or 1665154 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 47.

The spelling of 13991761208 in words is "thirteen billion, nine hundred ninety-one million, seven hundred sixty-one thousand, two hundred eight".