90159953477569 has 2 divisors, whose sum is σ = 90159953477570. Its totient is φ = 90159953477568.

The previous prime is 90159953477527. The next prime is 90159953477611. The reversal of 90159953477569 is 96577435995109.

It is a balanced prime because it is at equal distance from previous prime (90159953477527) and next prime (90159953477611).

It can be written as a sum of positive squares in only one way, i.e., 45728863585344 + 44431089892225 = 6762312^2 + 6665665^2 .

It is a cyclic number.

It is not a de Polignac number, because 90159953477569 - 2¹⁵ = 90159953444801 is a prime.

It is a super-2 number, since 2×90159953477569² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90159953471569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45079976738784 + 45079976738785.

It is an arithmetic number, because the mean of its divisors is an integer number (45079976738785).

Almost surely, 2^{90159953477569} is an apocalyptic number.

It is an amenable number.

90159953477569 is a deficient number, since it is larger than the sum of its proper divisors (1).

90159953477569 is an equidigital number, since it uses as much as digits as its factorization.

90159953477569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2893401000, while the sum is 79.

The spelling of 90159953477569 in words is "ninety trillion, one hundred fifty-nine billion, nine hundred fifty-three million, four hundred seventy-seven thousand, five hundred sixty-nine".