90060903217 has 2 divisors, whose sum is σ = 90060903218. Its totient is φ = 90060903216.

The previous prime is 90060903197. The next prime is 90060903263. The reversal of 90060903217 is 71230906009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53624201761 + 36436701456 = 231569^2 + 190884^2 .

It is a cyclic number.

It is not a de Polignac number, because 90060903217 - 2¹¹ = 90060901169 is a prime.

It is a super-2 number, since 2×90060903217² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90060906217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45030451608 + 45030451609.

It is an arithmetic number, because the mean of its divisors is an integer number (45030451609).

Almost surely, 2^90060903217 is an apocalyptic number.

It is an amenable number.

90060903217 is a deficient number, since it is larger than the sum of its proper divisors (1).

90060903217 is an equidigital number, since it uses as much as digits as its factorization.

90060903217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 37.

The spelling of 90060903217 in words is "ninety billion, sixty million, nine hundred three thousand, two hundred seventeen".