11061665881 has 32 divisors (see below), whose sum is σ = 13104488448. Its totient is φ = 9141612480.

The previous prime is 11061665869. The next prime is 11061665887. The reversal of 11061665881 is 18856616011.

It is not a de Polignac number, because 11061665881 - 2⁷ = 11061665753 is a prime.

It is a super-2 number, since 2×11061665881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11061665887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12195430 + ... + 12196336.

It is an arithmetic number, because the mean of its divisors is an integer number (409515264).

Almost surely, 2^11061665881 is an apocalyptic number.

It is an amenable number.

11061665881 is a deficient number, since it is larger than the sum of its proper divisors (2042822567).

11061665881 is an equidigital number, since it uses as much as digits as its factorization.

11061665881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501.

The product of its (nonzero) digits is 69120, while the sum is 43.

The spelling of 11061665881 in words is "eleven billion, sixty-one million, six hundred sixty-five thousand, eight hundred eighty-one".