21882065668 has 24 divisors (see below), whose sum is σ = 39469598784. Its totient is φ = 10610090400.

The previous prime is 21882065641. The next prime is 21882065693. The reversal of 21882065668 is 86656028812.

It is an unprimeable number.

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, 614230 + ... + 648877.

It is an arithmetic number, because the mean of its divisors is an integer number (1644566616).

Almost surely, 2^21882065668 is an apocalyptic number.

It is an amenable number.

21882065668 is a deficient number, since it is larger than the sum of its proper divisors (17587533116).

21882065668 is a wasteful number, since it uses less digits than its factorization.

21882065668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263243 (or 1263241 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 21882065668 in words is "twenty-one billion, eight hundred eighty-two million, sixty-five thousand, six hundred sixty-eight".