11291989975 has 18 divisors (see below), whose sum is σ = 16288121184. Its totient is φ = 7743078000.

The previous prime is 11291989967. The next prime is 11291989993. The reversal of 11291989975 is 57998919211.

It is a happy number.

11291989975 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 11291989975 - 2³ = 11291989967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 4607751 + ... + 4610200.

Almost surely, 2^11291989975 is an apocalyptic number.

11291989975 is a deficient number, since it is larger than the sum of its proper divisors (4996131209).

11291989975 is an equidigital number, since it uses as much as digits as its factorization.

11291989975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9217975 (or 9217963 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 61.

The spelling of 11291989975 in words is "eleven billion, two hundred ninety-one million, nine hundred eighty-nine thousand, nine hundred seventy-five".