90366775361 has 2 divisors, whose sum is σ = 90366775362. Its totient is φ = 90366775360.

The previous prime is 90366775333. The next prime is 90366775391. The reversal of 90366775361 is 16357766309.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60772110400 + 29594664961 = 246520^2 + 172031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90366775361 is a prime.

It is not a weakly prime, because it can be changed into another prime (90366775391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45183387680 + 45183387681.

It is an arithmetic number, because the mean of its divisors is an integer number (45183387681).

Almost surely, 2^90366775361 is an apocalyptic number.

It is an amenable number.

90366775361 is a deficient number, since it is larger than the sum of its proper divisors (1).

90366775361 is an equidigital number, since it uses as much as digits as its factorization.

90366775361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4286520, while the sum is 53.

The spelling of 90366775361 in words is "ninety billion, three hundred sixty-six million, seven hundred seventy-five thousand, three hundred sixty-one".