90363807509 has 2 divisors, whose sum is σ = 90363807510. Its totient is φ = 90363807508.

The previous prime is 90363807451. The next prime is 90363807539. The reversal of 90363807509 is 90570836309.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89938210609 + 425596900 = 299897^2 + 20630^2 .

It is a cyclic number.

It is not a de Polignac number, because 90363807509 - 2³² = 86068840213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90363807539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45181903754 + 45181903755.

It is an arithmetic number, because the mean of its divisors is an integer number (45181903755).

Almost surely, 2^90363807509 is an apocalyptic number.

It is an amenable number.

90363807509 is a deficient number, since it is larger than the sum of its proper divisors (1).

90363807509 is an equidigital number, since it uses as much as digits as its factorization.

90363807509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 90363807509 in words is "ninety billion, three hundred sixty-three million, eight hundred seven thousand, five hundred nine".