16890513577277 has 2 divisors, whose sum is σ = 16890513577278. Its totient is φ = 16890513577276.

The previous prime is 16890513577177. The next prime is 16890513577279. The reversal of 16890513577277 is 77277531509861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13728699711076 + 3161813866201 = 3705226^2 + 1778149^2 .

It is a cyclic number.

It is not a de Polignac number, because 16890513577277 - 2¹⁶ = 16890513511741 is a prime.

Together with 16890513577279, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16890513577279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8445256788638 + 8445256788639.

It is an arithmetic number, because the mean of its divisors is an integer number (8445256788639).

Almost surely, 2^{16890513577277} is an apocalyptic number.

It is an amenable number.

16890513577277 is a deficient number, since it is larger than the sum of its proper divisors (1).

16890513577277 is an equidigital number, since it uses as much as digits as its factorization.

16890513577277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155584800, while the sum is 68.

The spelling of 16890513577277 in words is "sixteen trillion, eight hundred ninety billion, five hundred thirteen million, five hundred seventy-seven thousand, two hundred seventy-seven".