21300598189 has 8 divisors (see below), whose sum is σ = 22940270360. Its totient is φ = 19661092416.

The previous prime is 21300598141. The next prime is 21300598211. The reversal of 21300598189 is 98189500312.

It can be written as a sum of positive squares in 4 ways, for example, as 722695689 + 20577902500 = 26883^2 + 143450^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21300598189 - 2⁹ = 21300597677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300598129) 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, 390799 + ... + 441955.

It is an arithmetic number, because the mean of its divisors is an integer number (2867533795).

Almost surely, 2^21300598189 is an apocalyptic number.

It is an amenable number.

21300598189 is a deficient number, since it is larger than the sum of its proper divisors (1639672171).

21300598189 is a wasteful number, since it uses less digits than its factorization.

21300598189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83199.

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 21300598189 in words is "twenty-one billion, three hundred million, five hundred ninety-eight thousand, one hundred eighty-nine".