18049127405503 has 2 divisors, whose sum is σ = 18049127405504. Its totient is φ = 18049127405502.

The previous prime is 18049127405467. The next prime is 18049127405557. The reversal of 18049127405503 is 30550472194081.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18049127405503 - 2⁹ = 18049127404991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18049127475503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9024563702751 + 9024563702752.

It is an arithmetic number, because the mean of its divisors is an integer number (9024563702752).

Almost surely, 2^{18049127405503} is an apocalyptic number.

18049127405503 is a deficient number, since it is larger than the sum of its proper divisors (1).

18049127405503 is an equidigital number, since it uses as much as digits as its factorization.

18049127405503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 49.

Adding to 18049127405503 its reverse (30550472194081), we get a palindrome (48599599599584).

The spelling of 18049127405503 in words is "eighteen trillion, forty-nine billion, one hundred twenty-seven million, four hundred five thousand, five hundred three".