90591704165 has 16 divisors (see below), whose sum is σ = 109035632640. Its totient is φ = 72256544640.

The previous prime is 90591704111. The next prime is 90591704171. The reversal of 90591704165 is 56140719509.

It is not a de Polignac number, because 90591704165 - 2¹⁰ = 90591703141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3214817 + ... + 3242873.

It is an arithmetic number, because the mean of its divisors is an integer number (6814727040).

Almost surely, 2^90591704165 is an apocalyptic number.

It is an amenable number.

90591704165 is a deficient number, since it is larger than the sum of its proper divisors (18443928475).

90591704165 is a wasteful number, since it uses less digits than its factorization.

90591704165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29972.

The product of its (nonzero) digits is 340200, while the sum is 47.

The spelling of 90591704165 in words is "ninety billion, five hundred ninety-one million, seven hundred four thousand, one hundred sixty-five".