18268724804181 has 8 divisors (see below), whose sum is σ = 25640315514720. Its totient is φ = 11538141981552.

The previous prime is 18268724804051. The next prime is 18268724804207. The reversal of 18268724804181 is 18140842786281.

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

It is not a de Polignac number, because 18268724804181 - 2⁹ = 18268724803669 is a prime.

It is a super-2 number, since 2×18268724804181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18268724804881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160251971910 + ... + 160251972023.

It is an arithmetic number, because the mean of its divisors is an integer number (3205039439340).

Almost surely, 2^{18268724804181} is an apocalyptic number.

It is an amenable number.

18268724804181 is a deficient number, since it is larger than the sum of its proper divisors (7371590710539).

18268724804181 is a wasteful number, since it uses less digits than its factorization.

18268724804181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320503943955.

The product of its (nonzero) digits is 11010048, while the sum is 60.

The spelling of 18268724804181 in words is "eighteen trillion, two hundred sixty-eight billion, seven hundred twenty-four million, eight hundred four thousand, one hundred eighty-one".