90804606719 has 2 divisors, whose sum is σ = 90804606720. Its totient is φ = 90804606718.

The previous prime is 90804606709. The next prime is 90804606721. The reversal of 90804606719 is 91760640809.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90804606719 - 2⁴ = 90804606703 is a prime.

It is a super-2 number, since 2×90804606719² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 90804606721, 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 (90804606709) 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, 45402303359 + 45402303360.

It is an arithmetic number, because the mean of its divisors is an integer number (45402303360).

Almost surely, 2^90804606719 is an apocalyptic number.

90804606719 is a deficient number, since it is larger than the sum of its proper divisors (1).

90804606719 is an equidigital number, since it uses as much as digits as its factorization.

90804606719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 90804606719 in words is "ninety billion, eight hundred four million, six hundred six thousand, seven hundred nineteen".