21344554124 has 24 divisors (see below), whose sum is σ = 38563824768. Its totient is φ = 10326424320.

The previous prime is 21344554123. The next prime is 21344554129. The reversal of 21344554124 is 42145544312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21344554123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1435094 + ... + 1449890.

It is an arithmetic number, because the mean of its divisors is an integer number (1606826032).

Almost surely, 2^21344554124 is an apocalyptic number.

It is an amenable number.

21344554124 is a deficient number, since it is larger than the sum of its proper divisors (17219270644).

21344554124 is a wasteful number, since it uses less digits than its factorization.

21344554124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26465 (or 26463 counting only the distinct ones).

The product of its digits is 76800, while the sum is 35.

The spelling of 21344554124 in words is "twenty-one billion, three hundred forty-four million, five hundred fifty-four thousand, one hundred twenty-four".