11491128422 has 16 divisors (see below), whose sum is σ = 17803536000. Its totient is φ = 5556841920.

The previous prime is 11491128421. The next prime is 11491128431. The reversal of 11491128422 is 22482119411.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11491128421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47954 + ... + 159002.

It is an arithmetic number, because the mean of its divisors is an integer number (1112721000).

Almost surely, 2^11491128422 is an apocalyptic number.

11491128422 is a deficient number, since it is larger than the sum of its proper divisors (6312407578).

11491128422 is a wasteful number, since it uses less digits than its factorization.

11491128422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112751.

The product of its digits is 9216, while the sum is 35.

The spelling of 11491128422 in words is "eleven billion, four hundred ninety-one million, one hundred twenty-eight thousand, four hundred twenty-two".