21826366379 has 8 divisors (see below), whose sum is σ = 21894141360. Its totient is φ = 21758652000.

The previous prime is 21826366363. The next prime is 21826366417. The reversal of 21826366379 is 97366362812.

It is a happy number.

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 21826366379 - 2⁴ = 21826366363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21826366379.

It is not an unprimeable number, because it can be changed into a prime (21826360379) 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, 768329 + ... + 796229.

It is an arithmetic number, because the mean of its divisors is an integer number (2736767670).

Almost surely, 2^21826366379 is an apocalyptic number.

21826366379 is a deficient number, since it is larger than the sum of its proper divisors (67774981).

21826366379 is a wasteful number, since it uses less digits than its factorization.

21826366379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30301.

The product of its digits is 3919104, while the sum is 53.

The spelling of 21826366379 in words is "twenty-one billion, eight hundred twenty-six million, three hundred sixty-six thousand, three hundred seventy-nine".