13921961275 has 12 divisors (see below), whose sum is σ = 17820111424. Its totient is φ = 10778292000.

The previous prime is 13921961267. The next prime is 13921961279. The reversal of 13921961275 is 57216912931.

It is not a de Polignac number, because 13921961275 - 2³ = 13921961267 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13921961279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8981136 + ... + 8982685.

Almost surely, 2^13921961275 is an apocalyptic number.

13921961275 is a deficient number, since it is larger than the sum of its proper divisors (3898150149).

13921961275 is a wasteful number, since it uses less digits than its factorization.

13921961275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17963862 (or 17963857 counting only the distinct ones).

The product of its digits is 204120, while the sum is 46.

The spelling of 13921961275 in words is "thirteen billion, nine hundred twenty-one million, nine hundred sixty-one thousand, two hundred seventy-five".