16991368600217 has 8 divisors (see below), whose sum is σ = 19626393677472. Its totient is φ = 14538069390400.

The previous prime is 16991368600201. The next prime is 16991368600223. The reversal of 16991368600217 is 71200686319961.

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

It is a cyclic number.

It is not a de Polignac number, because 16991368600217 - 2⁴ = 16991368600201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16991368600237) 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, 45431466659 + ... + 45431467032.

It is an arithmetic number, because the mean of its divisors is an integer number (2453299209684).

Almost surely, 2^{16991368600217} is an apocalyptic number.

16991368600217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16991368600217 is a deficient number, since it is larger than the sum of its proper divisors (2635025077255).

16991368600217 is a wasteful number, since it uses less digits than its factorization.

16991368600217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90862933719.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The spelling of 16991368600217 in words is "sixteen trillion, nine hundred ninety-one billion, three hundred sixty-eight million, six hundred thousand, two hundred seventeen".