16949666644 has 24 divisors (see below), whose sum is σ = 30956929920. Its totient is φ = 8104957344.

The previous prime is 16949666639. The next prime is 16949666659. The reversal of 16949666644 is 44666694961.

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, 683242 + ... + 707614.

It is an arithmetic number, because the mean of its divisors is an integer number (1289872080).

Almost surely, 2^16949666644 is an apocalyptic number.

It is an amenable number.

16949666644 is a deficient number, since it is larger than the sum of its proper divisors (14007263276).

16949666644 is a wasteful number, since it uses less digits than its factorization.

16949666644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31959 (or 31957 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 61.

The spelling of 16949666644 in words is "sixteen billion, nine hundred forty-nine million, six hundred sixty-six thousand, six hundred forty-four".