90223168613 has 4 divisors (see below), whose sum is σ = 90226644588. Its totient is φ = 90219692640.

The previous prime is 90223168601. The next prime is 90223168669. The reversal of 90223168613 is 31686132209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31686132209 = 17383 ⋅1822823.

It can be written as a sum of positive squares in 2 ways, for example, as 50939135809 + 39284032804 = 225697^2 + 198202^2 .

It is a cyclic number.

It is not a de Polignac number, because 90223168613 - 2⁴ = 90223168597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90223162613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1698758 + ... + 1751063.

It is an arithmetic number, because the mean of its divisors is an integer number (22556661147).

Almost surely, 2^90223168613 is an apocalyptic number.

It is an amenable number.

90223168613 is a deficient number, since it is larger than the sum of its proper divisors (3475975).

90223168613 is a wasteful number, since it uses less digits than its factorization.

90223168613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475974.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 90223168613 in words is "ninety billion, two hundred twenty-three million, one hundred sixty-eight thousand, six hundred thirteen".