16774663091 has 2 divisors, whose sum is σ = 16774663092. Its totient is φ = 16774663090.

The previous prime is 16774663069. The next prime is 16774663093. The reversal of 16774663091 is 19036647761.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16774663091 - 2²² = 16770468787 is a prime.

It is a Sophie Germain prime.

Together with 16774663093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16774663093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8387331545 + 8387331546.

It is an arithmetic number, because the mean of its divisors is an integer number (8387331546).

Almost surely, 2^16774663091 is an apocalyptic number.

16774663091 is a deficient number, since it is larger than the sum of its proper divisors (1).

16774663091 is an equidigital number, since it uses as much as digits as its factorization.

16774663091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The spelling of 16774663091 in words is "sixteen billion, seven hundred seventy-four million, six hundred sixty-three thousand, ninety-one".