1081181518881 has 16 divisors (see below), whose sum is σ = 1444314728640. Its totient is φ = 719419296960.

The previous prime is 1081181518853. The next prime is 1081181518931. The reversal of 1081181518881 is 1888151811801.

It is not a de Polignac number, because 1081181518881 - 2⁵ = 1081181518849 is a prime.

It is a super-2 number, since 2×1081181518881² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1081181518811) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3179511 + ... + 3503091.

It is an arithmetic number, because the mean of its divisors is an integer number (90269670540).

Almost surely, 2^{1081181518881} is an apocalyptic number.

It is an amenable number.

1081181518881 is a deficient number, since it is larger than the sum of its proper divisors (363133209759).

1081181518881 is a wasteful number, since it uses less digits than its factorization.

1081181518881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325696.

The product of its (nonzero) digits is 163840, while the sum is 51.

The spelling of 1081181518881 in words is "one trillion, eighty-one billion, one hundred eighty-one million, five hundred eighteen thousand, eight hundred eighty-one".