90281082091 has 2 divisors, whose sum is σ = 90281082092. Its totient is φ = 90281082090.

The previous prime is 90281082041. The next prime is 90281082121. The reversal of 90281082091 is 19028018209.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90281082091 - 2¹³ = 90281073899 is a prime.

It is not a weakly prime, because it can be changed into another prime (90281082041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45140541045 + 45140541046.

It is an arithmetic number, because the mean of its divisors is an integer number (45140541046).

Almost surely, 2^90281082091 is an apocalyptic number.

90281082091 is a deficient number, since it is larger than the sum of its proper divisors (1).

90281082091 is an equidigital number, since it uses as much as digits as its factorization.

90281082091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 40.

The spelling of 90281082091 in words is "ninety billion, two hundred eighty-one million, eighty-two thousand, ninety-one".