16717172205 has 32 divisors (see below), whose sum is σ = 28054900224. Its totient is φ = 8490272256.

The previous prime is 16717172191. The next prime is 16717172231. The reversal of 16717172205 is 50227171761.

It is a happy number.

It is not a de Polignac number, because 16717172205 - 2¹⁰ = 16717171181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 294352 + ... + 346521.

It is an arithmetic number, because the mean of its divisors is an integer number (876715632).

Almost surely, 2^16717172205 is an apocalyptic number.

16717172205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16717172205 is a deficient number, since it is larger than the sum of its proper divisors (11337728019).

16717172205 is a wasteful number, since it uses less digits than its factorization.

16717172205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640965.

The product of its (nonzero) digits is 41160, while the sum is 39.

The spelling of 16717172205 in words is "sixteen billion, seven hundred seventeen million, one hundred seventy-two thousand, two hundred five".