90999604055 has 8 divisors (see below), whose sum is σ = 114946868400. Its totient is φ = 68968120896.

The previous prime is 90999604043. The next prime is 90999604061. The reversal of 90999604055 is 55040699909.

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 90999604055 - 2⁴ = 90999604039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478945190 + ... + 478945379.

It is an arithmetic number, because the mean of its divisors is an integer number (14368358550).

Almost surely, 2^90999604055 is an apocalyptic number.

90999604055 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

90999604055 is a deficient number, since it is larger than the sum of its proper divisors (23947264345).

90999604055 is a wasteful number, since it uses less digits than its factorization.

90999604055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957890593.

The product of its (nonzero) digits is 3936600, while the sum is 56.

The spelling of 90999604055 in words is "ninety billion, nine hundred ninety-nine million, six hundred four thousand, fifty-five".