21882594906 has 16 divisors (see below), whose sum is σ = 48627988800. Its totient is φ = 7294198284.

The previous prime is 21882594869. The next prime is 21882594913. The reversal of 21882594906 is 60949528812.

It is a happy number.

21882594906 is a `hidden beast` number, since 21 + 8 + 82 + 59 + 490 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 405233239 = 21882594906 / (2 + 1 + 8 + 8 + 2 + 5 + 9 + 4 + 9 + 0 + 6).

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 7 ways as a sum of consecutive naturals, for example, 202616566 + ... + 202616673.

It is an arithmetic number, because the mean of its divisors is an integer number (3039249300).

Almost surely, 2^21882594906 is an apocalyptic number.

21882594906 is an abundant number, since it is smaller than the sum of its proper divisors (26745393894).

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

21882594906 is a wasteful number, since it uses less digits than its factorization.

21882594906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405233250 (or 405233244 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 21882594906 in words is "twenty-one billion, eight hundred eighty-two million, five hundred ninety-four thousand, nine hundred six".