21919382714 has 4 divisors (see below), whose sum is σ = 32879074074. Its totient is φ = 10959691356.

The previous prime is 21919382689. The next prime is 21919382761. The reversal of 21919382714 is 41728391912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20951115025 + 968267689 = 144745^2 + 31117^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5479845677 + ... + 5479845680.

Almost surely, 2^21919382714 is an apocalyptic number.

21919382714 is a deficient number, since it is larger than the sum of its proper divisors (10959691360).

21919382714 is a wasteful number, since it uses less digits than its factorization.

21919382714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10959691359.

The product of its digits is 217728, while the sum is 47.

The spelling of 21919382714 in words is "twenty-one billion, nine hundred nineteen million, three hundred eighty-two thousand, seven hundred fourteen".