11805892881 has 8 divisors (see below), whose sum is σ = 15743539680. Its totient is φ = 7869420672.

The previous prime is 11805892873. The next prime is 11805892883. The reversal of 11805892881 is 18829850811.

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

It is not a de Polignac number, because 11805892881 - 2³ = 11805892873 is a prime.

It is a super-2 number, since 2×11805892881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11805892883) 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 7 ways as a sum of consecutive naturals, for example, 269920 + ... + 310593.

It is an arithmetic number, because the mean of its divisors is an integer number (1967942460).

Almost surely, 2^11805892881 is an apocalyptic number.

It is an amenable number.

11805892881 is a deficient number, since it is larger than the sum of its proper divisors (3937646799).

11805892881 is an equidigital number, since it uses as much as digits as its factorization.

11805892881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587295.

The product of its (nonzero) digits is 368640, while the sum is 51.

The spelling of 11805892881 in words is "eleven billion, eight hundred five million, eight hundred ninety-two thousand, eight hundred eighty-one".