90065588109 has 32 divisors (see below), whose sum is σ = 144719477760. Its totient is φ = 48671798400.

The previous prime is 90065588089. The next prime is 90065588117. The reversal of 90065588109 is 90188556009.

It is not a de Polignac number, because 90065588109 - 2⁷ = 90065587981 is a prime.

It is a super-2 number, since 2×90065588109² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90065584109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30169 + ... + 425489.

It is an arithmetic number, because the mean of its divisors is an integer number (4522483680).

Almost surely, 2^90065588109 is an apocalyptic number.

It is an amenable number.

90065588109 is a deficient number, since it is larger than the sum of its proper divisors (54653889651).

90065588109 is a wasteful number, since it uses less digits than its factorization.

90065588109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395921.

The product of its (nonzero) digits is 777600, while the sum is 51.

The spelling of 90065588109 in words is "ninety billion, sixty-five million, five hundred eighty-eight thousand, one hundred nine".