21829279893734 has 8 divisors (see below), whose sum is σ = 32768707066248. Its totient is φ = 10906377538320.

The previous prime is 21829279893719. The next prime is 21829279893769. The reversal of 21829279893734 is 43739897292812.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4131200972 + ... + 4131206255.

It is an arithmetic number, because the mean of its divisors is an integer number (4096088383281).

Almost surely, 2^{21829279893734} is an apocalyptic number.

21829279893734 is a deficient number, since it is larger than the sum of its proper divisors (10939427172514).

21829279893734 is a wasteful number, since it uses less digits than its factorization.

21829279893734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8262408550.

The product of its digits is 658409472, while the sum is 74.

The spelling of 21829279893734 in words is "twenty-one trillion, eight hundred twenty-nine billion, two hundred seventy-nine million, eight hundred ninety-three thousand, seven hundred thirty-four".