90091877371 has 2 divisors, whose sum is σ = 90091877372. Its totient is φ = 90091877370.

The previous prime is 90091877353. The next prime is 90091877401. The reversal of 90091877371 is 17377819009.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90091877371 - 2²⁷ = 89957659643 is a prime.

It is not a weakly prime, because it can be changed into another prime (90091877471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45045938685 + 45045938686.

It is an arithmetic number, because the mean of its divisors is an integer number (45045938686).

Almost surely, 2^90091877371 is an apocalyptic number.

90091877371 is a deficient number, since it is larger than the sum of its proper divisors (1).

90091877371 is an equidigital number, since it uses as much as digits as its factorization.

90091877371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792, while the sum is 52.

The spelling of 90091877371 in words is "ninety billion, ninety-one million, eight hundred seventy-seven thousand, three hundred seventy-one".