90050537009 has 2 divisors, whose sum is σ = 90050537010. Its totient is φ = 90050537008.

The previous prime is 90050536969. The next prime is 90050537041. The reversal of 90050537009 is 90073505009.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82571746609 + 7478790400 = 287353^2 + 86480^2 .

It is a cyclic number.

It is not a de Polignac number, because 90050537009 - 2²⁰ = 90049488433 is a prime.

It is not a weakly prime, because it can be changed into another prime (90050537099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45025268504 + 45025268505.

It is an arithmetic number, because the mean of its divisors is an integer number (45025268505).

Almost surely, 2^90050537009 is an apocalyptic number.

It is an amenable number.

90050537009 is a deficient number, since it is larger than the sum of its proper divisors (1).

90050537009 is an equidigital number, since it uses as much as digits as its factorization.

90050537009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42525, while the sum is 38.

The spelling of 90050537009 in words is "ninety billion, fifty million, five hundred thirty-seven thousand, nine".