16631998667 has 2 divisors, whose sum is σ = 16631998668. Its totient is φ = 16631998666.

The previous prime is 16631998651. The next prime is 16631998673. The reversal of 16631998667 is 76689913661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16631998667 - 2⁴ = 16631998651 is a prime.

It is not a weakly prime, because it can be changed into another prime (16631998627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8315999333 + 8315999334.

It is an arithmetic number, because the mean of its divisors is an integer number (8315999334).

Almost surely, 2^16631998667 is an apocalyptic number.

16631998667 is a deficient number, since it is larger than the sum of its proper divisors (1).

16631998667 is an equidigital number, since it uses as much as digits as its factorization.

16631998667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17635968, while the sum is 62.

The spelling of 16631998667 in words is "sixteen billion, six hundred thirty-one million, nine hundred ninety-eight thousand, six hundred sixty-seven".