21792248184 has 128 divisors (see below), whose sum is σ = 66048099840. Its totient is φ = 5849260032.

The previous prime is 21792248171. The next prime is 21792248237. The reversal of 21792248184 is 48184229712.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1601152 + ... + 1614704.

It is an arithmetic number, because the mean of its divisors is an integer number (516000780).

Almost surely, 2^21792248184 is an apocalyptic number.

21792248184 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21792248184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33024049920).

21792248184 is an abundant number, since it is smaller than the sum of its proper divisors (44255851656).

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

21792248184 is a wasteful number, since it uses less digits than its factorization.

21792248184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14149 (or 14145 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The spelling of 21792248184 in words is "twenty-one billion, seven hundred ninety-two million, two hundred forty-eight thousand, one hundred eighty-four".