90529078091 has 2 divisors, whose sum is σ = 90529078092. Its totient is φ = 90529078090.

The previous prime is 90529078069. The next prime is 90529078093. The reversal of 90529078091 is 19087092509.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90529078091 is a prime.

Together with 90529078093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90529078093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45264539045 + 45264539046.

It is an arithmetic number, because the mean of its divisors is an integer number (45264539046).

Almost surely, 2^90529078091 is an apocalyptic number.

90529078091 is a deficient number, since it is larger than the sum of its proper divisors (1).

90529078091 is an equidigital number, since it uses as much as digits as its factorization.

90529078091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 50.

The spelling of 90529078091 in words is "ninety billion, five hundred twenty-nine million, seventy-eight thousand, ninety-one".