14099165721 has 32 divisors (see below), whose sum is σ = 21560288000. Its totient is φ = 9099319680.

The previous prime is 14099165699. The next prime is 14099165767. The reversal of 14099165721 is 12756199041.

It is not a de Polignac number, because 14099165721 - 2⁶ = 14099165657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14099165791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163341 + ... + 234261.

It is an arithmetic number, because the mean of its divisors is an integer number (673759000).

Almost surely, 2^14099165721 is an apocalyptic number.

It is an amenable number.

14099165721 is a deficient number, since it is larger than the sum of its proper divisors (7461122279).

14099165721 is a wasteful number, since it uses less digits than its factorization.

14099165721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71166 (or 71160 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The spelling of 14099165721 in words is "fourteen billion, ninety-nine million, one hundred sixty-five thousand, seven hundred twenty-one".