11556144066 has 16 divisors (see below), whose sum is σ = 23736945024. Its totient is φ = 3747938544.

The previous prime is 11556144059. The next prime is 11556144113. The reversal of 11556144066 is 66044165511.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26027130 + ... + 26027573.

It is an arithmetic number, because the mean of its divisors is an integer number (1483559064).

Almost surely, 2^11556144066 is an apocalyptic number.

11556144066 is an abundant number, since it is smaller than the sum of its proper divisors (12180800958).

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

11556144066 is a wasteful number, since it uses less digits than its factorization.

11556144066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52054745.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 11556144066 in words is "eleven billion, five hundred fifty-six million, one hundred forty-four thousand, sixty-six".