21982863399 has 16 divisors (see below), whose sum is σ = 33507307008. Its totient is φ = 12558032352.

The previous prime is 21982863307. The next prime is 21982863403. The reversal of 21982863399 is 99336828912.

It is not a de Polignac number, because 21982863399 - 2¹² = 21982859303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21982863299) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 74332 + ... + 222465.

It is an arithmetic number, because the mean of its divisors is an integer number (2094206688).

Almost surely, 2^21982863399 is an apocalyptic number.

21982863399 is a deficient number, since it is larger than the sum of its proper divisors (11524443609).

21982863399 is a wasteful number, since it uses less digits than its factorization.

21982863399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300334.

The product of its digits is 10077696, while the sum is 60.

The spelling of 21982863399 in words is "twenty-one billion, nine hundred eighty-two million, eight hundred sixty-three thousand, three hundred ninety-nine".