90297291303689 has 2 divisors, whose sum is σ = 90297291303690. Its totient is φ = 90297291303688.

The previous prime is 90297291303607. The next prime is 90297291303727. The reversal of 90297291303689 is 98630319279209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49802942694400 + 40494348609289 = 7057120^2 + 6363517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90297291303689 is a prime.

It is not a weakly prime, because it can be changed into another prime (90297291303589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45148645651844 + 45148645651845.

It is an arithmetic number, because the mean of its divisors is an integer number (45148645651845).

Almost surely, 2^{90297291303689} is an apocalyptic number.

It is an amenable number.

90297291303689 is a deficient number, since it is larger than the sum of its proper divisors (1).

90297291303689 is an equidigital number, since it uses as much as digits as its factorization.

90297291303689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79361856, while the sum is 68.

The spelling of 90297291303689 in words is "ninety trillion, two hundred ninety-seven billion, two hundred ninety-one million, three hundred three thousand, six hundred eighty-nine".