14665664991 has 32 divisors (see below), whose sum is σ = 20101120000. Its totient is φ = 9508438368.

The previous prime is 14665664963. The next prime is 14665665059. The reversal of 14665664991 is 19946656641.

It is a happy number.

It is not a de Polignac number, because 14665664991 - 2¹³ = 14665656799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14665664911) 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, 4856280 + ... + 4859298.

It is an arithmetic number, because the mean of its divisors is an integer number (628160000).

Almost surely, 2^14665664991 is an apocalyptic number.

14665664991 is a deficient number, since it is larger than the sum of its proper divisors (5435455009).

14665664991 is a wasteful number, since it uses less digits than its factorization.

14665664991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403.

The product of its digits is 8398080, while the sum is 57.

The spelling of 14665664991 in words is "fourteen billion, six hundred sixty-five million, six hundred sixty-four thousand, nine hundred ninety-one".