11291291852 has 18 divisors (see below), whose sum is σ = 20100373188. Its totient is φ = 5549950168.

The previous prime is 11291291849. The next prime is 11291291857. The reversal of 11291291852 is 25819219211.

It is not an unprimeable number, because it can be changed into a prime (11291291857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 391538 + ... + 419385.

Almost surely, 2^11291291852 is an apocalyptic number.

It is an amenable number.

11291291852 is a deficient number, since it is larger than the sum of its proper divisors (8809081336).

11291291852 is an equidigital number, since it uses as much as digits as its factorization.

11291291852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811045 (or 810984 counting only the distinct ones).

The product of its digits is 25920, while the sum is 41.

The spelling of 11291291852 in words is "eleven billion, two hundred ninety-one million, two hundred ninety-one thousand, eight hundred fifty-two".