18281412511 has 2 divisors, whose sum is σ = 18281412512. Its totient is φ = 18281412510.

The previous prime is 18281412509. The next prime is 18281412559. The reversal of 18281412511 is 11521418281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18281412511 - 2¹ = 18281412509 is a prime.

Together with 18281412509, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18281412581) 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, 9140706255 + 9140706256.

It is an arithmetic number, because the mean of its divisors is an integer number (9140706256).

Almost surely, 2^18281412511 is an apocalyptic number.

18281412511 is a deficient number, since it is larger than the sum of its proper divisors (1).

18281412511 is an equidigital number, since it uses as much as digits as its factorization.

18281412511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5120, while the sum is 34.

The spelling of 18281412511 in words is "eighteen billion, two hundred eighty-one million, four hundred twelve thousand, five hundred eleven".