20018718587363 has 2 divisors, whose sum is σ = 20018718587364. Its totient is φ = 20018718587362.

The previous prime is 20018718587261. The next prime is 20018718587381. The reversal of 20018718587363 is 36378581781002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20018718587363 - 2²⁶ = 20018651478499 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20018718580363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10009359293681 + 10009359293682.

It is an arithmetic number, because the mean of its divisors is an integer number (10009359293682).

Almost surely, 2^{20018718587363} is an apocalyptic number.

20018718587363 is a deficient number, since it is larger than the sum of its proper divisors (1).

20018718587363 is an equidigital number, since it uses as much as digits as its factorization.

20018718587363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13547520, while the sum is 59.

The spelling of 20018718587363 in words is "twenty trillion, eighteen billion, seven hundred eighteen million, five hundred eighty-seven thousand, three hundred sixty-three".