14665303721 has 2 divisors, whose sum is σ = 14665303722. Its totient is φ = 14665303720.

The previous prime is 14665303711. The next prime is 14665303747. The reversal of 14665303721 is 12730356641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7416654400 + 7248649321 = 86120^2 + 85139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14665303721 is a prime.

It is a super-2 number, since 2×14665303721² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (14665303711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7332651860 + 7332651861.

It is an arithmetic number, because the mean of its divisors is an integer number (7332651861).

Almost surely, 2^14665303721 is an apocalyptic number.

It is an amenable number.

14665303721 is a deficient number, since it is larger than the sum of its proper divisors (1).

14665303721 is an equidigital number, since it uses as much as digits as its factorization.

14665303721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 14665303721 in words is "fourteen billion, six hundred sixty-five million, three hundred three thousand, seven hundred twenty-one".