21882857382 has 24 divisors (see below), whose sum is σ = 47758942296. Its totient is φ = 7241042016.

The previous prime is 21882857377. The next prime is 21882857411. The reversal of 21882857382 is 28375828812.

21882857382 is a `hidden beast` number, since 2 + 188 + 2 + 85 + 7 + 382 = 666.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4434448 + ... + 4439379.

It is an arithmetic number, because the mean of its divisors is an integer number (1989955929).

Almost surely, 2^21882857382 is an apocalyptic number.

21882857382 is an abundant number, since it is smaller than the sum of its proper divisors (25876084914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21882857382 is a wasteful number, since it uses less digits than its factorization.

21882857382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8873972 (or 8873969 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The spelling of 21882857382 in words is "twenty-one billion, eight hundred eighty-two million, eight hundred fifty-seven thousand, three hundred eighty-two".