18327011817245 has 8 divisors (see below), whose sum is σ = 22152942752184. Its totient is φ = 14554590406144.

The previous prime is 18327011817217. The next prime is 18327011817263. The reversal of 18327011817245 is 54271811072381.

It can be written as a sum of positive squares in 4 ways, for example, as 1543028542969 + 16783983274276 = 1242187^2 + 4096826^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18327011817245 - 2¹⁶ = 18327011751709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18327011817193 and 18327011817202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13377380204 + ... + 13377381573.

It is an arithmetic number, because the mean of its divisors is an integer number (2769117844023).

Almost surely, 2^{18327011817245} is an apocalyptic number.

It is an amenable number.

18327011817245 is a deficient number, since it is larger than the sum of its proper divisors (3825930934939).

18327011817245 is a wasteful number, since it uses less digits than its factorization.

18327011817245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26754761919.

The product of its (nonzero) digits is 752640, while the sum is 50.

The spelling of 18327011817245 in words is "eighteen trillion, three hundred twenty-seven billion, eleven million, eight hundred seventeen thousand, two hundred forty-five".