21826839359 has 8 divisors (see below), whose sum is σ = 24888522960. Its totient is φ = 18962683776.

The previous prime is 21826839337. The next prime is 21826839367. The reversal of 21826839359 is 95393862812.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21826839359 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 (21826839389) 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, 49381769 + ... + 49382210.

It is an arithmetic number, because the mean of its divisors is an integer number (3111065370).

Almost surely, 2^21826839359 is an apocalyptic number.

21826839359 is a deficient number, since it is larger than the sum of its proper divisors (3061683601).

21826839359 is a wasteful number, since it uses less digits than its factorization.

21826839359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98764009.

The product of its digits is 5598720, while the sum is 56.

The spelling of 21826839359 in words is "twenty-one billion, eight hundred twenty-six million, eight hundred thirty-nine thousand, three hundred fifty-nine".