18110480320881 has 45 divisors (see below), whose sum is σ = 29295886570929. Its totient is φ = 11144604560544.

The previous prime is 18110480320871. The next prime is 18110480320901. The reversal of 18110480320881 is 18802308401181.

The square root of 18110480320881 is 4255641.

It is a perfect power (a square), and thus also a powerful number.

18110480320881 is a `hidden beast` number, since 1 + 81 + 10 + 480 + 3 + 2 + 0 + 8 + 81 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 803549095281 + 17306931225600 = 896409^2 + 4160160^2 .

It is not a de Polignac number, because 18110480320881 - 2¹³ = 18110480312689 is a prime.

It is a super-2 number, since 2×18110480320881² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18110480320871) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 497891811 + ... + 497928183.

Almost surely, 2^{18110480320881} is an apocalyptic number.

18110480320881 is the 4255641-st square number.

18110480320881 is the 2127821-st centered octagonal number.

It is an amenable number.

18110480320881 is a deficient number, since it is larger than the sum of its proper divisors (11185406250048).

18110480320881 is an frugal number, since it uses more digits than its factorization.

18110480320881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72784 (or 36389 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 45.

The spelling of 18110480320881 in words is "eighteen trillion, one hundred ten billion, four hundred eighty million, three hundred twenty thousand, eight hundred eighty-one".