21323627344 has 20 divisors (see below), whose sum is σ = 43488977440. Its totient is φ = 10100665440.

The previous prime is 21323627341. The next prime is 21323627387. The reversal of 21323627344 is 44372632312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323627341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35071452 + ... + 35072059.

It is an arithmetic number, because the mean of its divisors is an integer number (2174448872).

Almost surely, 2^21323627344 is an apocalyptic number.

It is an amenable number.

21323627344 is an abundant number, since it is smaller than the sum of its proper divisors (22165350096).

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

21323627344 is a wasteful number, since it uses less digits than its factorization.

21323627344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70143538 (or 70143532 counting only the distinct ones).

The product of its digits is 145152, while the sum is 37.

The spelling of 21323627344 in words is "twenty-one billion, three hundred twenty-three million, six hundred twenty-seven thousand, three hundred forty-four".