90500541018089 has 2 divisors, whose sum is σ = 90500541018090. Its totient is φ = 90500541018088.

The previous prime is 90500541018067. The next prime is 90500541018131. The reversal of 90500541018089 is 98081014500509.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69587846176489 + 20912694841600 = 8341933^2 + 4573040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90500541018089 is a prime.

It is not a weakly prime, because it can be changed into another prime (90500541018289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45250270509044 + 45250270509045.

It is an arithmetic number, because the mean of its divisors is an integer number (45250270509045).

Almost surely, 2^{90500541018089} is an apocalyptic number.

It is an amenable number.

90500541018089 is a deficient number, since it is larger than the sum of its proper divisors (1).

90500541018089 is an equidigital number, since it uses as much as digits as its factorization.

90500541018089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 50.

The spelling of 90500541018089 in words is "ninety trillion, five hundred billion, five hundred forty-one million, eighteen thousand, eighty-nine".