11432561666 has 8 divisors (see below), whose sum is σ = 17153230080. Its totient is φ = 5714818308.

The previous prime is 11432561639. The next prime is 11432561669. The reversal of 11432561666 is 66616523411.

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

It is not an unprimeable number, because it can be changed into a prime (11432561669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721466 + ... + 737141.

It is an arithmetic number, because the mean of its divisors is an integer number (2144153760).

Almost surely, 2^11432561666 is an apocalyptic number.

11432561666 is a deficient number, since it is larger than the sum of its proper divisors (5720668414).

11432561666 is a wasteful number, since it uses less digits than its factorization.

11432561666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462528.

The product of its digits is 155520, while the sum is 41.

The spelling of 11432561666 in words is "eleven billion, four hundred thirty-two million, five hundred sixty-one thousand, six hundred sixty-six".