18266135113 has 2 divisors, whose sum is σ = 18266135114. Its totient is φ = 18266135112.

The previous prime is 18266135081. The next prime is 18266135119. The reversal of 18266135113 is 31153166281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18227160064 + 38975049 = 135008^2 + 6243^2 .

It is a cyclic number.

It is not a de Polignac number, because 18266135113 - 2⁵ = 18266135081 is a prime.

It is not a weakly prime, because it can be changed into another prime (18266135119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9133067556 + 9133067557.

It is an arithmetic number, because the mean of its divisors is an integer number (9133067557).

Almost surely, 2^18266135113 is an apocalyptic number.

It is an amenable number.

18266135113 is a deficient number, since it is larger than the sum of its proper divisors (1).

18266135113 is an equidigital number, since it uses as much as digits as its factorization.

18266135113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The spelling of 18266135113 in words is "eighteen billion, two hundred sixty-six million, one hundred thirty-five thousand, one hundred thirteen".