21132304189 has 8 divisors (see below), whose sum is σ = 22377455928. Its totient is φ = 19887383040.

The previous prime is 21132304139. The next prime is 21132304201. The reversal of 21132304189 is 98140323112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14133643225 + 6998660964 = 118885^2 + 83658^2 .

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 21132304189 - 2³¹ = 18984820541 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 (21132304129) 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, 153079 + ... + 256315.

It is an arithmetic number, because the mean of its divisors is an integer number (2797181991).

Almost surely, 2^21132304189 is an apocalyptic number.

It is an amenable number.

21132304189 is a deficient number, since it is larger than the sum of its proper divisors (1245151739).

21132304189 is a wasteful number, since it uses less digits than its factorization.

21132304189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115295.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 21132304189 in words is "twenty-one billion, one hundred thirty-two million, three hundred four thousand, one hundred eighty-nine".