11556055506 has 8 divisors (see below), whose sum is σ = 23112111024. Its totient is φ = 3852018500.

The previous prime is 11556055471. The next prime is 11556055529. The reversal of 11556055506 is 60555065511.

11556055506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

11556055506 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 963004620 + ... + 963004631.

It is an arithmetic number, because the mean of its divisors is an integer number (2889013878).

Almost surely, 2^11556055506 is an apocalyptic number.

11556055506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11556055506 is a wasteful number, since it uses less digits than its factorization.

11556055506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926009256.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 11556055506 in words is "eleven billion, five hundred fifty-six million, fifty-five thousand, five hundred six".