20117343882247 has 2 divisors, whose sum is σ = 20117343882248. Its totient is φ = 20117343882246.

The previous prime is 20117343882227. The next prime is 20117343882277. The reversal of 20117343882247 is 74228834371102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20117343882247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20117343882194 and 20117343882203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20117343882227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10058671941123 + 10058671941124.

It is an arithmetic number, because the mean of its divisors is an integer number (10058671941124).

Almost surely, 2^{20117343882247} is an apocalyptic number.

20117343882247 is a deficient number, since it is larger than the sum of its proper divisors (1).

20117343882247 is an equidigital number, since it uses as much as digits as its factorization.

20117343882247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3612672, while the sum is 52.

The spelling of 20117343882247 in words is "twenty trillion, one hundred seventeen billion, three hundred forty-three million, eight hundred eighty-two thousand, two hundred forty-seven".