16666868337 has 32 divisors (see below), whose sum is σ = 26102169600. Its totient is φ = 9259904448.

The previous prime is 16666868321. The next prime is 16666868359. The reversal of 16666868337 is 73386866661.

It is a happy number.

It is not a de Polignac number, because 16666868337 - 2⁴ = 16666868321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16666868377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1204464 + ... + 1218222.

It is an arithmetic number, because the mean of its divisors is an integer number (815692800).

Almost surely, 2^16666868337 is an apocalyptic number.

It is an amenable number.

16666868337 is a deficient number, since it is larger than the sum of its proper divisors (9435301263).

16666868337 is a wasteful number, since it uses less digits than its factorization.

16666868337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15365.

The product of its digits is 31352832, while the sum is 60.

The spelling of 16666868337 in words is "sixteen billion, six hundred sixty-six million, eight hundred sixty-eight thousand, three hundred thirty-seven".