14397921718 has 16 divisors (see below), whose sum is σ = 21950635824. Its totient is φ = 7081351200.

The previous prime is 14397921679. The next prime is 14397921761. The reversal of 14397921718 is 81712979341.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17296 + ... + 170572.

It is an arithmetic number, because the mean of its divisors is an integer number (1371914739).

Almost surely, 2^14397921718 is an apocalyptic number.

14397921718 is a deficient number, since it is larger than the sum of its proper divisors (7552714106).

14397921718 is a wasteful number, since it uses less digits than its factorization.

14397921718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154047.

The product of its digits is 762048, while the sum is 52.

The spelling of 14397921718 in words is "fourteen billion, three hundred ninety-seven million, nine hundred twenty-one thousand, seven hundred eighteen".