13921961097 has 16 divisors (see below), whose sum is σ = 20255788800. Its totient is φ = 8435192400.

The previous prime is 13921961071. The next prime is 13921961149. The reversal of 13921961097 is 79016912931.

It is not a de Polignac number, because 13921961097 - 2⁶ = 13921961033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13921961047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64654 + ... + 178952.

It is an arithmetic number, because the mean of its divisors is an integer number (1265986800).

Almost surely, 2^13921961097 is an apocalyptic number.

It is an amenable number.

13921961097 is a deficient number, since it is larger than the sum of its proper divisors (6333827703).

13921961097 is a wasteful number, since it uses less digits than its factorization.

13921961097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118004.

The product of its (nonzero) digits is 183708, while the sum is 48.

The spelling of 13921961097 in words is "thirteen billion, nine hundred twenty-one million, nine hundred sixty-one thousand, ninety-seven".