21884629109 has 8 divisors (see below), whose sum is σ = 25592656320. Its totient is φ = 18322014816.

The previous prime is 21884629079. The next prime is 21884629121. The reversal of 21884629109 is 90192648812.

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

It is not a de Polignac number, because 21884629109 - 2²⁰ = 21883580533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21884629139) 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, 36352904 + ... + 36353505.

It is an arithmetic number, because the mean of its divisors is an integer number (3199082040).

Almost surely, 2^21884629109 is an apocalyptic number.

It is an amenable number.

21884629109 is a deficient number, since it is larger than the sum of its proper divisors (3708027211).

21884629109 is an equidigital number, since it uses as much as digits as its factorization.

21884629109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72706459.

The product of its (nonzero) digits is 497664, while the sum is 50.

The spelling of 21884629109 in words is "twenty-one billion, eight hundred eighty-four million, six hundred twenty-nine thousand, one hundred nine".