20360243544247 has 2 divisors, whose sum is σ = 20360243544248. Its totient is φ = 20360243544246.

The previous prime is 20360243544241. The next prime is 20360243544283. The reversal of 20360243544247 is 74244534206302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20360243544247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20360243544197 and 20360243544206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20360243544241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10180121772123 + 10180121772124.

It is an arithmetic number, because the mean of its divisors is an integer number (10180121772124).

Almost surely, 2^{20360243544247} is an apocalyptic number.

20360243544247 is a deficient number, since it is larger than the sum of its proper divisors (1).

20360243544247 is an equidigital number, since it uses as much as digits as its factorization.

20360243544247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 46.

The spelling of 20360243544247 in words is "twenty trillion, three hundred sixty billion, two hundred forty-three million, five hundred forty-four thousand, two hundred forty-seven".