16368666217 has 8 divisors (see below), whose sum is σ = 16667109536. Its totient is φ = 16071815232.

The previous prime is 16368666203. The next prime is 16368666287. The reversal of 16368666217 is 71266686361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16368666217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16368666287) 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, 377328 + ... + 418465.

It is an arithmetic number, because the mean of its divisors is an integer number (2083388692).

Almost surely, 2^16368666217 is an apocalyptic number.

It is an amenable number.

16368666217 is a deficient number, since it is larger than the sum of its proper divisors (298443319).

16368666217 is an equidigital number, since it uses as much as digits as its factorization.

16368666217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796167.

The product of its digits is 2612736, while the sum is 52.

The spelling of 16368666217 in words is "sixteen billion, three hundred sixty-eight million, six hundred sixty-six thousand, two hundred seventeen".