18155483508611 has 2 divisors, whose sum is σ = 18155483508612. Its totient is φ = 18155483508610.

The previous prime is 18155483508607. The next prime is 18155483508619. The reversal of 18155483508611 is 11680538455181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18155483508611 - 2² = 18155483508607 is a prime.

It is a super-2 number, since 2×18155483508611² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18155483508619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9077741754305 + 9077741754306.

It is an arithmetic number, because the mean of its divisors is an integer number (9077741754306).

Almost surely, 2^{18155483508611} is an apocalyptic number.

18155483508611 is a deficient number, since it is larger than the sum of its proper divisors (1).

18155483508611 is an equidigital number, since it uses as much as digits as its factorization.

18155483508611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608000, while the sum is 56.

The spelling of 18155483508611 in words is "eighteen trillion, one hundred fifty-five billion, four hundred eighty-three million, five hundred eight thousand, six hundred eleven".