21844300054 has 32 divisors (see below), whose sum is σ = 35102833920. Its totient is φ = 10176083232.

The previous prime is 21844300039. The next prime is 21844300067. The reversal of 21844300054 is 45000344812.

It is a junction number, because it is equal to n+sod(n) for n = 21844299989 and 21844300025.

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 15 ways as a sum of consecutive naturals, for example, 154239 + ... + 259765.

It is an arithmetic number, because the mean of its divisors is an integer number (1096963560).

Almost surely, 2^21844300054 is an apocalyptic number.

21844300054 is a deficient number, since it is larger than the sum of its proper divisors (13258533866).

21844300054 is a wasteful number, since it uses less digits than its factorization.

21844300054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105684.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 21844300054 its reverse (45000344812), we get a palindrome (66844644866).

The spelling of 21844300054 in words is "twenty-one billion, eight hundred forty-four million, three hundred thousand, fifty-four".