16890609907 has 2 divisors, whose sum is σ = 16890609908. Its totient is φ = 16890609906.

The previous prime is 16890609833. The next prime is 16890609929. The reversal of 16890609907 is 70990609861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16890609907 - 2¹⁵ = 16890577139 is a prime.

It is not a weakly prime, because it can be changed into another prime (16890609007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8445304953 + 8445304954.

It is an arithmetic number, because the mean of its divisors is an integer number (8445304954).

Almost surely, 2^16890609907 is an apocalyptic number.

16890609907 is a deficient number, since it is larger than the sum of its proper divisors (1).

16890609907 is an equidigital number, since it uses as much as digits as its factorization.

16890609907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The spelling of 16890609907 in words is "sixteen billion, eight hundred ninety million, six hundred nine thousand, nine hundred seven".