18033615844847 has 2 divisors, whose sum is σ = 18033615844848. Its totient is φ = 18033615844846.

The previous prime is 18033615844819. The next prime is 18033615844919. The reversal of 18033615844847 is 74844851633081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18033615844847 - 2¹⁰ = 18033615843823 is a prime.

It is a super-2 number, since 2×18033615844847² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18033615844847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18033615844807) 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, 9016807922423 + 9016807922424.

It is an arithmetic number, because the mean of its divisors is an integer number (9016807922424).

Almost surely, 2^{18033615844847} is an apocalyptic number.

18033615844847 is a deficient number, since it is larger than the sum of its proper divisors (1).

18033615844847 is an equidigital number, since it uses as much as digits as its factorization.

18033615844847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61931520, while the sum is 62.

The spelling of 18033615844847 in words is "eighteen trillion, thirty-three billion, six hundred fifteen million, eight hundred forty-four thousand, eight hundred forty-seven".