21833208879 has 16 divisors (see below), whose sum is σ = 29218041600. Its totient is φ = 14502018816.

The previous prime is 21833208823. The next prime is 21833208911. The reversal of 21833208879 is 97880233812.

It is not a de Polignac number, because 21833208879 - 2⁸ = 21833208623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21833208809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 962047 + ... + 984479.

It is an arithmetic number, because the mean of its divisors is an integer number (1826127600).

Almost surely, 2^21833208879 is an apocalyptic number.

21833208879 is a deficient number, since it is larger than the sum of its proper divisors (7384832721).

21833208879 is a wasteful number, since it uses less digits than its factorization.

21833208879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23614.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 21833208879 in words is "twenty-one billion, eight hundred thirty-three million, two hundred eight thousand, eight hundred seventy-nine".