20346305543189 has 2 divisors, whose sum is σ = 20346305543190. Its totient is φ = 20346305543188.

The previous prime is 20346305543167. The next prime is 20346305543237. The reversal of 20346305543189 is 98134550364302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14529323710225 + 5816981832964 = 3811735^2 + 2411842^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20346305543189 is a prime.

It is a super-3 number, since 3×20346305543189³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20346305543189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20346305543119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173152771594 + 10173152771595.

It is an arithmetic number, because the mean of its divisors is an integer number (10173152771595).

Almost surely, 2^{20346305543189} is an apocalyptic number.

It is an amenable number.

20346305543189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346305543189 is an equidigital number, since it uses as much as digits as its factorization.

20346305543189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9331200, while the sum is 53.

The spelling of 20346305543189 in words is "twenty trillion, three hundred forty-six billion, three hundred five million, five hundred forty-three thousand, one hundred eighty-nine".