18481223063 has 2 divisors, whose sum is σ = 18481223064. Its totient is φ = 18481223062.

The previous prime is 18481223029. The next prime is 18481223083. The reversal of 18481223063 is 36032218481.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18481223063 - 2⁸ = 18481222807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18481223023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9240611531 + 9240611532.

It is an arithmetic number, because the mean of its divisors is an integer number (9240611532).

Almost surely, 2^18481223063 is an apocalyptic number.

18481223063 is a deficient number, since it is larger than the sum of its proper divisors (1).

18481223063 is an equidigital number, since it uses as much as digits as its factorization.

18481223063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 18481223063 in words is "eighteen billion, four hundred eighty-one million, two hundred twenty-three thousand, sixty-three".