11208109881 has 16 divisors (see below), whose sum is σ = 15347404800. Its totient is φ = 7272221328.

The previous prime is 11208109873. The next prime is 11208109897. The reversal of 11208109881 is 18890180211.

11208109881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11208109881 - 2³ = 11208109873 is a prime.

It is a super-2 number, since 2×11208109881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11208109811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196801 + ... + 247278.

It is an arithmetic number, because the mean of its divisors is an integer number (959212800).

Almost surely, 2^11208109881 is an apocalyptic number.

It is an amenable number.

11208109881 is a deficient number, since it is larger than the sum of its proper divisors (4139294919).

11208109881 is a wasteful number, since it uses less digits than its factorization.

11208109881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444308.

The product of its (nonzero) digits is 9216, while the sum is 39.

The spelling of 11208109881 in words is "eleven billion, two hundred eight million, one hundred nine thousand, eight hundred eighty-one".