16993638699 has 8 divisors (see below), whose sum is σ = 22675579392. Its totient is φ = 11320395240.

The previous prime is 16993638677. The next prime is 16993638737. The reversal of 16993638699 is 99683639961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16993638699 - 2¹⁵ = 16993605931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16993638659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2169747 + ... + 2177564.

It is an arithmetic number, because the mean of its divisors is an integer number (2834447424).

Almost surely, 2^16993638699 is an apocalyptic number.

16993638699 is a deficient number, since it is larger than the sum of its proper divisors (5681940693).

16993638699 is a wasteful number, since it uses less digits than its factorization.

16993638699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4348617.

The product of its digits is 102036672, while the sum is 69.

The spelling of 16993638699 in words is "sixteen billion, nine hundred ninety-three million, six hundred thirty-eight thousand, six hundred ninety-nine".