11491256228 has 12 divisors (see below), whose sum is σ = 20984033280. Its totient is φ = 5495818152.

The previous prime is 11491256219. The next prime is 11491256239. The reversal of 11491256228 is 82265219411.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62452388 + ... + 62452571.

It is an arithmetic number, because the mean of its divisors is an integer number (1748669440).

Almost surely, 2^11491256228 is an apocalyptic number.

It is an amenable number.

11491256228 is a deficient number, since it is larger than the sum of its proper divisors (9492777052).

11491256228 is a wasteful number, since it uses less digits than its factorization.

11491256228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124904986 (or 124904984 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The spelling of 11491256228 in words is "eleven billion, four hundred ninety-one million, two hundred fifty-six thousand, two hundred twenty-eight".