11491256227 has 4 divisors (see below), whose sum is σ = 12535915896. Its totient is φ = 10446596560.

The previous prime is 11491256219. The next prime is 11491256239. The reversal of 11491256227 is 72265219411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11491256227 - 2³ = 11491256219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11491256227.

It is not an unprimeable number, because it can be changed into a prime (11491256027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522329818 + ... + 522329839.

It is an arithmetic number, because the mean of its divisors is an integer number (3133978974).

Almost surely, 2^11491256227 is an apocalyptic number.

11491256227 is a deficient number, since it is larger than the sum of its proper divisors (1044659669).

11491256227 is a wasteful number, since it uses less digits than its factorization.

11491256227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044659668.

The product of its digits is 60480, while the sum is 40.

The spelling of 11491256227 in words is "eleven billion, four hundred ninety-one million, two hundred fifty-six thousand, two hundred twenty-seven".