21882083891 has 8 divisors (see below), whose sum is σ = 22349758464. Its totient is φ = 21414496840.

The previous prime is 21882083857. The next prime is 21882083903. The reversal of 21882083891 is 19838028812.

It is a happy number.

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 21882083891 - 2²⁶ = 21814975027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21882083831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850766 + ... + 876108.

It is an arithmetic number, because the mean of its divisors is an integer number (2793719808).

Almost surely, 2^21882083891 is an apocalyptic number.

21882083891 is a deficient number, since it is larger than the sum of its proper divisors (467674573).

21882083891 is a wasteful number, since it uses less digits than its factorization.

21882083891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43761.

The product of its (nonzero) digits is 442368, while the sum is 50.

The spelling of 21882083891 in words is "twenty-one billion, eight hundred eighty-two million, eighty-three thousand, eight hundred ninety-one".