21552248804 has 24 divisors (see below), whose sum is σ = 38587664640. Its totient is φ = 10530014976.

The previous prime is 21552248803. The next prime is 21552248821. The reversal of 21552248804 is 40884225512.

It is not an unprimeable number, because it can be changed into a prime (21552248801) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 320912 + ... + 382215.

It is an arithmetic number, because the mean of its divisors is an integer number (1607819360).

Almost surely, 2^21552248804 is an apocalyptic number.

It is an amenable number.

21552248804 is a deficient number, since it is larger than the sum of its proper divisors (17035415836).

21552248804 is a wasteful number, since it uses less digits than its factorization.

21552248804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703307 (or 703305 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 41.

The spelling of 21552248804 in words is "twenty-one billion, five hundred fifty-two million, two hundred forty-eight thousand, eight hundred four".