21713727683 has 8 divisors (see below), whose sum is σ = 22996003680. Its totient is φ = 20432007040.

The previous prime is 21713727661. The next prime is 21713727719. The reversal of 21713727683 is 38672731712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21713727683 - 2⁶ = 21713727619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21713727653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56948 + ... + 216033.

It is an arithmetic number, because the mean of its divisors is an integer number (2874500460).

Almost surely, 2^21713727683 is an apocalyptic number.

21713727683 is a deficient number, since it is larger than the sum of its proper divisors (1282275997).

21713727683 is a wasteful number, since it uses less digits than its factorization.

21713727683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277677.

The product of its digits is 592704, while the sum is 47.

The spelling of 21713727683 in words is "twenty-one billion, seven hundred thirteen million, seven hundred twenty-seven thousand, six hundred eighty-three".