11556006605 has 32 divisors (see below), whose sum is σ = 16325221248. Its totient is φ = 7741843200.

The previous prime is 11556006599. The next prime is 11556006629. The reversal of 11556006605 is 50660065511.

11556006605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11556006605 - 2⁴ = 11556006589 is a prime.

It is a Duffinian number.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 334607 + ... + 367523.

It is an arithmetic number, because the mean of its divisors is an integer number (510163164).

Almost surely, 2^11556006605 is an apocalyptic number.

It is an amenable number.

11556006605 is a deficient number, since it is larger than the sum of its proper divisors (4769214643).

11556006605 is a wasteful number, since it uses less digits than its factorization.

11556006605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33437.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 11556006605 in words is "eleven billion, five hundred fifty-six million, six thousand, six hundred five".