90189791909359 has 2 divisors, whose sum is σ = 90189791909360. Its totient is φ = 90189791909358.

The previous prime is 90189791909303. The next prime is 90189791909491. The reversal of 90189791909359 is 95390919798109.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90189791909359 - 2¹¹ = 90189791907311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90189791909059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45094895954679 + 45094895954680.

It is an arithmetic number, because the mean of its divisors is an integer number (45094895954680).

Almost surely, 2^{90189791909359} is an apocalyptic number.

90189791909359 is a deficient number, since it is larger than the sum of its proper divisors (1).

90189791909359 is an equidigital number, since it uses as much as digits as its factorization.

90189791909359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 446410440, while the sum is 79.

The spelling of 90189791909359 in words is "ninety trillion, one hundred eighty-nine billion, seven hundred ninety-one million, nine hundred nine thousand, three hundred fifty-nine".