21682814573 has 8 divisors (see below), whose sum is σ = 26084589120. Its totient is φ = 17607097440.

The previous prime is 21682814563. The next prime is 21682814581. The reversal of 21682814573 is 37541828612.

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 21682814573 - 2⁸ = 21682814317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21682814563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81514208 + ... + 81514473.

It is an arithmetic number, because the mean of its divisors is an integer number (3260573640).

Almost surely, 2^21682814573 is an apocalyptic number.

It is an amenable number.

21682814573 is a deficient number, since it is larger than the sum of its proper divisors (4401774547).

21682814573 is a wasteful number, since it uses less digits than its factorization.

21682814573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163028707.

The product of its digits is 645120, while the sum is 47.

The spelling of 21682814573 in words is "twenty-one billion, six hundred eighty-two million, eight hundred fourteen thousand, five hundred seventy-three".