16626658450117 has 4 divisors (see below), whose sum is σ = 16654415810400. Its totient is φ = 16598901089836.

The previous prime is 16626658450079. The next prime is 16626658450123. The reversal of 16626658450117 is 71105485662661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16626658450117 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 (16626658400117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13878679243 + ... + 13878680440.

It is an arithmetic number, because the mean of its divisors is an integer number (4163603952600).

Almost surely, 2^{16626658450117} is an apocalyptic number.

It is an amenable number.

16626658450117 is a deficient number, since it is larger than the sum of its proper divisors (27757360283).

16626658450117 is an equidigital number, since it uses as much as digits as its factorization.

16626658450117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27757360282.

The product of its (nonzero) digits is 14515200, while the sum is 58.

The spelling of 16626658450117 in words is "sixteen trillion, six hundred twenty-six billion, six hundred fifty-eight million, four hundred fifty thousand, one hundred seventeen".