90559695609 has 6 divisors (see below), whose sum is σ = 130808449226. Its totient is φ = 60373130400.

The previous prime is 90559695599. The next prime is 90559695637. The reversal of 90559695609 is 90659695509.

90559695609 is a `hidden beast` number, since 9 + 0 + 5 + 5 + 9 + 69 + 560 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 73451840400 + 17107855209 = 271020^2 + 130797^2 .

It is not a de Polignac number, because 90559695609 - 2⁷ = 90559695481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90559695689) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5031094192 + ... + 5031094209.

Almost surely, 2^90559695609 is an apocalyptic number.

It is an amenable number.

90559695609 is a deficient number, since it is larger than the sum of its proper divisors (40248753617).

90559695609 is a wasteful number, since it uses less digits than its factorization.

90559695609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10062188407 (or 10062188404 counting only the distinct ones).

The product of its (nonzero) digits is 29524500, while the sum is 63.

The spelling of 90559695609 in words is "ninety billion, five hundred fifty-nine million, six hundred ninety-five thousand, six hundred nine".