16664326623 has 12 divisors (see below), whose sum is σ = 27509364688. Its totient is φ = 9522472320.

The previous prime is 16664326589. The next prime is 16664326673. The reversal of 16664326623 is 32662346661.

It is not a de Polignac number, because 16664326623 - 2⁶ = 16664326559 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 (16664326673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132256498 + ... + 132256623.

Almost surely, 2^16664326623 is an apocalyptic number.

16664326623 is a deficient number, since it is larger than the sum of its proper divisors (10845038065).

16664326623 is a wasteful number, since it uses less digits than its factorization.

16664326623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264513134 (or 264513131 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 45.

The spelling of 16664326623 in words is "sixteen billion, six hundred sixty-four million, three hundred twenty-six thousand, six hundred twenty-three".