21604002023300 has 72 divisors (see below), whose sum is σ = 46959259305672. Its totient is φ = 8627120128000.

The previous prime is 21604002023291. The next prime is 21604002023323. The reversal of 21604002023300 is 332020040612.

It can be written as a sum of positive squares in 12 ways, for example, as 450404738884 + 21153597284416 = 671122^2 + 4599304^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 826428230 + ... + 826454370.

It is an arithmetic number, because the mean of its divisors is an integer number (652211934801).

Almost surely, 2^{21604002023300} is an apocalyptic number.

21604002023300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21604002023300 is an abundant number, since it is smaller than the sum of its proper divisors (25355257282372).

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

21604002023300 is a wasteful number, since it uses less digits than its factorization.

21604002023300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39689 (or 39682 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21604002023300 its reverse (332020040612), we get a palindrome (21936022063912).

The spelling of 21604002023300 in words is "twenty-one trillion, six hundred four billion, two million, twenty-three thousand, three hundred".