90330903617 has 2 divisors, whose sum is σ = 90330903618. Its totient is φ = 90330903616.

The previous prime is 90330903589. The next prime is 90330903623. The reversal of 90330903617 is 71630903309.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90330903601 + 16 = 300551^2 + 4^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90330903617 is a prime.

It is not a weakly prime, because it can be changed into another prime (90330903667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45165451808 + 45165451809.

It is an arithmetic number, because the mean of its divisors is an integer number (45165451809).

Almost surely, 2^90330903617 is an apocalyptic number.

It is an amenable number.

90330903617 is a deficient number, since it is larger than the sum of its proper divisors (1).

90330903617 is an equidigital number, since it uses as much as digits as its factorization.

90330903617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 41.

The spelling of 90330903617 in words is "ninety billion, three hundred thirty million, nine hundred three thousand, six hundred seventeen".