11227772556 has 360 divisors, whose sum is σ = 39640575744. Its totient is φ = 2690962560.

The previous prime is 11227772533. The next prime is 11227772579. The reversal of 11227772556 is 65527772211.

11227772556 is a `hidden beast` number, since 1 + 1 + 2 + 27 + 7 + 72 + 556 = 666.

11227772556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11227772533) and next prime (11227772579).

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 119 ways as a sum of consecutive naturals, for example, 4214881 + ... + 4217543.

Almost surely, 2^11227772556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11227772556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19820287872).

11227772556 is an abundant number, since it is smaller than the sum of its proper divisors (28412803188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11227772556 is a wasteful number, since it uses less digits than its factorization.

11227772556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2723 (or 2699 counting only the distinct ones).

The product of its digits is 411600, while the sum is 45.

The spelling of 11227772556 in words is "eleven billion, two hundred twenty-seven million, seven hundred seventy-two thousand, five hundred fifty-six".