21723622683 has 8 divisors (see below), whose sum is σ = 33102663168. Its totient is φ = 12413498664.

The previous prime is 21723622637. The next prime is 21723622699. The reversal of 21723622683 is 38622632712.

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

It is not a de Polignac number, because 21723622683 - 2²¹ = 21721525531 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (21723622183) 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 7 ways as a sum of consecutive naturals, for example, 517229091 + ... + 517229132.

It is an arithmetic number, because the mean of its divisors is an integer number (4137832896).

Almost surely, 2^21723622683 is an apocalyptic number.

21723622683 is a deficient number, since it is larger than the sum of its proper divisors (11379040485).

21723622683 is a wasteful number, since it uses less digits than its factorization.

21723622683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034458233.

The product of its digits is 290304, while the sum is 42.

The spelling of 21723622683 in words is "twenty-one billion, seven hundred twenty-three million, six hundred twenty-two thousand, six hundred eighty-three".