20432203543187 has 2 divisors, whose sum is σ = 20432203543188. Its totient is φ = 20432203543186.

The previous prime is 20432203543183. The next prime is 20432203543249. The reversal of 20432203543187 is 78134530223402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20432203543187 - 2² = 20432203543183 is a prime.

It is not a weakly prime, because it can be changed into another prime (20432203543183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216101771593 + 10216101771594.

It is an arithmetic number, because the mean of its divisors is an integer number (10216101771594).

Almost surely, 2^{20432203543187} is an apocalyptic number.

20432203543187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20432203543187 is an equidigital number, since it uses as much as digits as its factorization.

20432203543187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 44.

Adding to 20432203543187 its reverse (78134530223402), we get a palindrome (98566733766589).

The spelling of 20432203543187 in words is "twenty trillion, four hundred thirty-two billion, two hundred three million, five hundred forty-three thousand, one hundred eighty-seven".