90164024617 has 2 divisors, whose sum is σ = 90164024618. Its totient is φ = 90164024616.

The previous prime is 90164024611. The next prime is 90164024627. The reversal of 90164024617 is 71642046109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88937554176 + 1226470441 = 298224^2 + 35021^2 .

It is a cyclic number.

It is not a de Polignac number, because 90164024617 - 2³⁵ = 55804286249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90164024617.

It is not a weakly prime, because it can be changed into another prime (90164024611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45082012308 + 45082012309.

It is an arithmetic number, because the mean of its divisors is an integer number (45082012309).

Almost surely, 2^90164024617 is an apocalyptic number.

It is an amenable number.

90164024617 is a deficient number, since it is larger than the sum of its proper divisors (1).

90164024617 is an equidigital number, since it uses as much as digits as its factorization.

90164024617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 90164024617 in words is "ninety billion, one hundred sixty-four million, twenty-four thousand, six hundred seventeen".