21879612203 has 8 divisors (see below), whose sum is σ = 23040883200. Its totient is φ = 20719312488.

The previous prime is 21879612169. The next prime is 21879612229. The reversal of 21879612203 is 30221697812.

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 21879612203 - 2⁸ = 21879611947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21879612253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196343 + ... + 286896.

It is an arithmetic number, because the mean of its divisors is an integer number (2880110400).

Almost surely, 2^21879612203 is an apocalyptic number.

21879612203 is a deficient number, since it is larger than the sum of its proper divisors (1161270997).

21879612203 is a wasteful number, since it uses less digits than its factorization.

21879612203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485641.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 21879612203 in words is "twenty-one billion, eight hundred seventy-nine million, six hundred twelve thousand, two hundred three".