14699519721 has 12 divisors (see below), whose sum is σ = 21235093360. Its totient is φ = 9798547320.

The previous prime is 14699519717. The next prime is 14699519743. The reversal of 14699519721 is 12791599641.

It is a happy number.

14699519721 is a `hidden beast` number, since 1 + 469 + 95 + 1 + 97 + 2 + 1 = 666.

It is not a de Polignac number, because 14699519721 - 2² = 14699519717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14699589721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8011 + ... + 171648.

Almost surely, 2^14699519721 is an apocalyptic number.

It is an amenable number.

14699519721 is a deficient number, since it is larger than the sum of its proper divisors (6535573639).

14699519721 is a wasteful number, since it uses less digits than its factorization.

14699519721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188756 (or 188753 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The spelling of 14699519721 in words is "fourteen billion, six hundred ninety-nine million, five hundred nineteen thousand, seven hundred twenty-one".