90091086583 has 4 divisors (see below), whose sum is σ = 90123957288. Its totient is φ = 90058215880.

The previous prime is 90091086557. The next prime is 90091086593. The reversal of 90091086583 is 38568019009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38568019009 = 13 ⋅2966770693.

It is a cyclic number.

It is not a de Polignac number, because 90091086583 - 2¹³ = 90091078391 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 (90091086593) 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 3 ways as a sum of consecutive naturals, for example, 16431241 + ... + 16436722.

It is an arithmetic number, because the mean of its divisors is an integer number (22530989322).

Almost surely, 2^90091086583 is an apocalyptic number.

90091086583 is a deficient number, since it is larger than the sum of its proper divisors (32870705).

90091086583 is a wasteful number, since it uses less digits than its factorization.

90091086583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32870704.

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 90091086583 in words is "ninety billion, ninety-one million, eighty-six thousand, five hundred eighty-three".