90911019271 has 2 divisors, whose sum is σ = 90911019272. Its totient is φ = 90911019270.

The previous prime is 90911019263. The next prime is 90911019301. The reversal of 90911019271 is 17291011909.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90911019271 - 2³ = 90911019263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90911019211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45455509635 + 45455509636.

It is an arithmetic number, because the mean of its divisors is an integer number (45455509636).

Almost surely, 2^90911019271 is an apocalyptic number.

90911019271 is a deficient number, since it is larger than the sum of its proper divisors (1).

90911019271 is an equidigital number, since it uses as much as digits as its factorization.

90911019271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 40.

The spelling of 90911019271 in words is "ninety billion, nine hundred eleven million, nineteen thousand, two hundred seventy-one".