90909575803 has 2 divisors, whose sum is σ = 90909575804. Its totient is φ = 90909575802.

The previous prime is 90909575797. The next prime is 90909575833. The reversal of 90909575803 is 30857590909.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90909575803 - 2²⁵ = 90876021371 is a prime.

It is not a weakly prime, because it can be changed into another prime (90909575833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45454787901 + 45454787902.

It is an arithmetic number, because the mean of its divisors is an integer number (45454787902).

Almost surely, 2^90909575803 is an apocalyptic number.

90909575803 is a deficient number, since it is larger than the sum of its proper divisors (1).

90909575803 is an equidigital number, since it uses as much as digits as its factorization.

90909575803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3061800, while the sum is 55.

The spelling of 90909575803 in words is "ninety billion, nine hundred nine million, five hundred seventy-five thousand, eight hundred three".