18455105533 has 2 divisors, whose sum is σ = 18455105534. Its totient is φ = 18455105532.

The previous prime is 18455105519. The next prime is 18455105563. The reversal of 18455105533 is 33550155481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17539558969 + 915546564 = 132437^2 + 30258^2 .

It is an emirp because it is prime and its reverse (33550155481) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18455105533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18455105503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9227552766 + 9227552767.

It is an arithmetic number, because the mean of its divisors is an integer number (9227552767).

Almost surely, 2^18455105533 is an apocalyptic number.

It is an amenable number.

18455105533 is a deficient number, since it is larger than the sum of its proper divisors (1).

18455105533 is an equidigital number, since it uses as much as digits as its factorization.

18455105533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 18455105533 in words is "eighteen billion, four hundred fifty-five million, one hundred five thousand, five hundred thirty-three".