90844988611 has 4 divisors (see below), whose sum is σ = 97833064672. Its totient is φ = 83856912552.

The previous prime is 90844988609. The next prime is 90844988669. The reversal of 90844988611 is 11688944809.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11688944809 = 569 ⋅20542961.

It is a cyclic number.

It is not a de Polignac number, because 90844988611 - 2¹ = 90844988609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90844988411) 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, 3494038011 + ... + 3494038036.

It is an arithmetic number, because the mean of its divisors is an integer number (24458266168).

Almost surely, 2^90844988611 is an apocalyptic number.

90844988611 is a deficient number, since it is larger than the sum of its proper divisors (6988076061).

90844988611 is a wasteful number, since it uses less digits than its factorization.

90844988611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6988076060.

The product of its (nonzero) digits is 3981312, while the sum is 58.

The spelling of 90844988611 in words is "ninety billion, eight hundred forty-four million, nine hundred eighty-eight thousand, six hundred eleven".