11553256666 has 8 divisors (see below), whose sum is σ = 19805582880. Its totient is φ = 4951395708.

The previous prime is 11553256657. The next prime is 11553256667. The reversal of 11553256666 is 66665235511.

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 (11553256667) 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, 412616296 + ... + 412616323.

It is an arithmetic number, because the mean of its divisors is an integer number (2475697860).

Almost surely, 2^11553256666 is an apocalyptic number.

11553256666 is a deficient number, since it is larger than the sum of its proper divisors (8252326214).

11553256666 is an equidigital number, since it uses as much as digits as its factorization.

11553256666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825232628.

The product of its digits is 972000, while the sum is 46.

The spelling of 11553256666 in words is "eleven billion, five hundred fifty-three million, two hundred fifty-six thousand, six hundred sixty-six".