18242178060287 has 2 divisors, whose sum is σ = 18242178060288. Its totient is φ = 18242178060286.

The previous prime is 18242178060283. The next prime is 18242178060317. The reversal of 18242178060287 is 78206087124281.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18242178060287 - 2² = 18242178060283 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18242178060283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9121089030143 + 9121089030144.

It is an arithmetic number, because the mean of its divisors is an integer number (9121089030144).

Almost surely, 2^{18242178060287} is an apocalyptic number.

18242178060287 is a deficient number, since it is larger than the sum of its proper divisors (1).

18242178060287 is an equidigital number, since it uses as much as digits as its factorization.

18242178060287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4816896, while the sum is 56.

The spelling of 18242178060287 in words is "eighteen trillion, two hundred forty-two billion, one hundred seventy-eight million, sixty thousand, two hundred eighty-seven".