18040369092481 has 16 divisors (see below), whose sum is σ = 18542481408000. Its totient is φ = 17542099446480.

The previous prime is 18040369092479. The next prime is 18040369092503. The reversal of 18040369092481 is 18429096304081.

It is a cyclic number.

It is not a de Polignac number, because 18040369092481 - 2¹ = 18040369092479 is a prime.

It is a super-2 number, since 2×18040369092481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18040369092461) 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 in 15 ways as a sum of consecutive naturals, for example, 16420096 + ... + 17484286.

It is an arithmetic number, because the mean of its divisors is an integer number (1158905088000).

Almost surely, 2^{18040369092481} is an apocalyptic number.

It is an amenable number.

18040369092481 is a deficient number, since it is larger than the sum of its proper divisors (502112315519).

18040369092481 is a wasteful number, since it uses less digits than its factorization.

18040369092481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065996.

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 18040369092481 in words is "eighteen trillion, forty billion, three hundred sixty-nine million, ninety-two thousand, four hundred eighty-one".