90518132291 has 2 divisors, whose sum is σ = 90518132292. Its totient is φ = 90518132290.

The previous prime is 90518132269. The next prime is 90518132311. The reversal of 90518132291 is 19223181509.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90518132291 - 2¹⁴ = 90518115907 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (90518132251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45259066145 + 45259066146.

It is an arithmetic number, because the mean of its divisors is an integer number (45259066146).

Almost surely, 2^90518132291 is an apocalyptic number.

90518132291 is a deficient number, since it is larger than the sum of its proper divisors (1).

90518132291 is an equidigital number, since it uses as much as digits as its factorization.

90518132291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 90518132291 in words is "ninety billion, five hundred eighteen million, one hundred thirty-two thousand, two hundred ninety-one".