90320855563 has 2 divisors, whose sum is σ = 90320855564. Its totient is φ = 90320855562.

The previous prime is 90320855549. The next prime is 90320855567. The reversal of 90320855563 is 36555802309.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90320855563 - 2⁵ = 90320855531 is a prime.

It is not a weakly prime, because it can be changed into another prime (90320855567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45160427781 + 45160427782.

It is an arithmetic number, because the mean of its divisors is an integer number (45160427782).

Almost surely, 2^90320855563 is an apocalyptic number.

90320855563 is a deficient number, since it is larger than the sum of its proper divisors (1).

90320855563 is an equidigital number, since it uses as much as digits as its factorization.

90320855563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 90320855563 in words is "ninety billion, three hundred twenty million, eight hundred fifty-five thousand, five hundred sixty-three".