21799069184 has 80 divisors (see below), whose sum is σ = 45197711328. Its totient is φ = 10494738432.

The previous prime is 21799069169. The next prime is 21799069219. The reversal of 21799069184 is 48196099712.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1831637 + ... + 1843499.

Almost surely, 2^21799069184 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21799069184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22598855664).

21799069184 is an abundant number, since it is smaller than the sum of its proper divisors (23398642144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21799069184 is an equidigital number, since it uses as much as digits as its factorization.

21799069184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12015 (or 11999 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 56.

The spelling of 21799069184 in words is "twenty-one billion, seven hundred ninety-nine million, sixty-nine thousand, one hundred eighty-four".