18485854556359 has 2 divisors, whose sum is σ = 18485854556360. Its totient is φ = 18485854556358.

The previous prime is 18485854556341. The next prime is 18485854556413. The reversal of 18485854556359 is 95365545858481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18485854556359 - 2⁷ = 18485854556231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18485854556759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9242927278179 + 9242927278180.

It is an arithmetic number, because the mean of its divisors is an integer number (9242927278180).

Almost surely, 2^{18485854556359} is an apocalyptic number.

18485854556359 is a deficient number, since it is larger than the sum of its proper divisors (1).

18485854556359 is an equidigital number, since it uses as much as digits as its factorization.

18485854556359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4147200000, while the sum is 76.

The spelling of 18485854556359 in words is "eighteen trillion, four hundred eighty-five billion, eight hundred fifty-four million, five hundred fifty-six thousand, three hundred fifty-nine".