18178963719107 has 2 divisors, whose sum is σ = 18178963719108. Its totient is φ = 18178963719106.

The previous prime is 18178963719079. The next prime is 18178963719227. The reversal of 18178963719107 is 70191736987181.

It is a weak prime.

It is an emirp because it is prime and its reverse (70191736987181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18178963719107 - 2³⁶ = 18110244242371 is a prime.

It is not a weakly prime, because it can be changed into another prime (18178963718107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9089481859553 + 9089481859554.

It is an arithmetic number, because the mean of its divisors is an integer number (9089481859554).

Almost surely, 2^{18178963719107} is an apocalyptic number.

18178963719107 is a deficient number, since it is larger than the sum of its proper divisors (1).

18178963719107 is an equidigital number, since it uses as much as digits as its factorization.

18178963719107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32006016, while the sum is 68.

The spelling of 18178963719107 in words is "eighteen trillion, one hundred seventy-eight billion, nine hundred sixty-three million, seven hundred nineteen thousand, one hundred seven".