11545305666 has 16 divisors (see below), whose sum is σ = 23469146688. Its totient is φ = 3785346000.

The previous prime is 11545305643. The next prime is 11545305691. The reversal of 11545305666 is 66650354511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15771910 + ... + 15772641.

It is an arithmetic number, because the mean of its divisors is an integer number (1466821668).

Almost surely, 2^11545305666 is an apocalyptic number.

11545305666 is an abundant number, since it is smaller than the sum of its proper divisors (11923841022).

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

11545305666 is a wasteful number, since it uses less digits than its factorization.

11545305666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31544617.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 11545305666 in words is "eleven billion, five hundred forty-five million, three hundred five thousand, six hundred sixty-six".