11455384556 has 192 divisors, whose sum is σ = 26646918144. Its totient is φ = 4180377600.

The previous prime is 11455384537. The next prime is 11455384571. The reversal of 11455384556 is 65548355411.

It is a self number, because there is not a number n which added to its sum of digits gives 11455384556.

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 63 ways as a sum of consecutive naturals, for example, 47532596 + ... + 47532836.

It is an arithmetic number, because the mean of its divisors is an integer number (138786032).

Almost surely, 2^11455384556 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 11455384556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13323459072).

11455384556 is an abundant number, since it is smaller than the sum of its proper divisors (15191533588).

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

11455384556 is a wasteful number, since it uses less digits than its factorization.

11455384556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 438 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 47.

The spelling of 11455384556 in words is "eleven billion, four hundred fifty-five million, three hundred eighty-four thousand, five hundred fifty-six".