21868323339 has 16 divisors (see below), whose sum is σ = 29227929120. Its totient is φ = 14543842560.

The previous prime is 21868323331. The next prime is 21868323361. The reversal of 21868323339 is 93332386812.

It is not a de Polignac number, because 21868323339 - 2³ = 21868323331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21868323331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2491719 + ... + 2500479.

It is an arithmetic number, because the mean of its divisors is an integer number (1826745570).

Almost surely, 2^21868323339 is an apocalyptic number.

21868323339 is a deficient number, since it is larger than the sum of its proper divisors (7359605781).

21868323339 is a wasteful number, since it uses less digits than its factorization.

21868323339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10670.

The product of its digits is 1119744, while the sum is 48.

The spelling of 21868323339 in words is "twenty-one billion, eight hundred sixty-eight million, three hundred twenty-three thousand, three hundred thirty-nine".