18875782724243 has 2 divisors, whose sum is σ = 18875782724244. Its totient is φ = 18875782724242.

The previous prime is 18875782724231. The next prime is 18875782724297. The reversal of 18875782724243 is 34242728757881.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18875782724243 is a prime.

It is not a weakly prime, because it can be changed into another prime (18875782724203) 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, 9437891362121 + 9437891362122.

It is an arithmetic number, because the mean of its divisors is an integer number (9437891362122).

Almost surely, 2^{18875782724243} is an apocalyptic number.

18875782724243 is a deficient number, since it is larger than the sum of its proper divisors (1).

18875782724243 is an equidigital number, since it uses as much as digits as its factorization.

18875782724243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 337182720, while the sum is 68.

The spelling of 18875782724243 in words is "eighteen trillion, eight hundred seventy-five billion, seven hundred eighty-two million, seven hundred twenty-four thousand, two hundred forty-three".