90090990911 has 2 divisors, whose sum is σ = 90090990912. Its totient is φ = 90090990910.

The previous prime is 90090990893. The next prime is 90090990953. The reversal of 90090990911 is 11909909009.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90090990911 - 2¹⁴ = 90090974527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90090998911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45045495455 + 45045495456.

It is an arithmetic number, because the mean of its divisors is an integer number (45045495456).

Almost surely, 2^90090990911 is an apocalyptic number.

90090990911 is a deficient number, since it is larger than the sum of its proper divisors (1).

90090990911 is an equidigital number, since it uses as much as digits as its factorization.

90090990911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59049, while the sum is 47.

The spelling of 90090990911 in words is "ninety billion, ninety million, nine hundred ninety thousand, nine hundred eleven".