21652820322189 has 16 divisors (see below), whose sum is σ = 33000155650560. Its totient is φ = 12371021999280.

The previous prime is 21652820322187. The next prime is 21652820322193. The reversal of 21652820322189 is 98122302825612.

It is a happy number.

It is not a de Polignac number, because 21652820322189 - 2¹ = 21652820322187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21652820322181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83959219 + ... + 84216720.

It is an arithmetic number, because the mean of its divisors is an integer number (2062509728160).

Almost surely, 2^{21652820322189} is an apocalyptic number.

It is an amenable number.

21652820322189 is a deficient number, since it is larger than the sum of its proper divisors (11347335328371).

21652820322189 is a wasteful number, since it uses less digits than its factorization.

21652820322189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168182080.

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 21652820322189 in words is "twenty-one trillion, six hundred fifty-two billion, eight hundred twenty million, three hundred twenty-two thousand, one hundred eighty-nine".