17699990399 has 48 divisors (see below), whose sum is σ = 22446528192. Its totient is φ = 13660867584.

The previous prime is 17699990339. The next prime is 17699990467. The reversal of 17699990399 is 99309999671.

It is not a de Polignac number, because 17699990399 - 2²⁴ = 17683213183 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 (17699990339) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12350987 + ... + 12352419.

It is an arithmetic number, because the mean of its divisors is an integer number (467636004).

Almost surely, 2^17699990399 is an apocalyptic number.

17699990399 is a deficient number, since it is larger than the sum of its proper divisors (4746537793).

17699990399 is a wasteful number, since it uses less digits than its factorization.

17699990399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716 (or 1703 counting only the distinct ones).

The product of its (nonzero) digits is 66961566, while the sum is 71.

The spelling of 17699990399 in words is "seventeen billion, six hundred ninety-nine million, nine hundred ninety thousand, three hundred ninety-nine".