90118637917 has 8 divisors (see below), whose sum is σ = 112355704512. Its totient is φ = 70222315200.

The previous prime is 90118637909. The next prime is 90118637941. The reversal of 90118637917 is 71973681109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90118637917 - 2³ = 90118637909 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 (90118647917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585185884 + ... + 585186037.

It is an arithmetic number, because the mean of its divisors is an integer number (14044463064).

Almost surely, 2^90118637917 is an apocalyptic number.

It is an amenable number.

90118637917 is a deficient number, since it is larger than the sum of its proper divisors (22237066595).

90118637917 is a wasteful number, since it uses less digits than its factorization.

90118637917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170371939.

The product of its (nonzero) digits is 571536, while the sum is 52.

The spelling of 90118637917 in words is "ninety billion, one hundred eighteen million, six hundred thirty-seven thousand, nine hundred seventeen".