9966119966 has 16 divisors (see below), whose sum is σ = 16329938688. Its totient is φ = 4524015000.

The previous prime is 9966119963. The next prime is 9966120013. The reversal of 9966119966 is 6699116699.

9966119966 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9966119899 and 9966119908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9966119963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285080 + ... + 318123.

It is an arithmetic number, because the mean of its divisors is an integer number (1020621168).

Almost surely, 2^9966119966 is an apocalyptic number.

9966119966 is a deficient number, since it is larger than the sum of its proper divisors (6363818722).

9966119966 is a wasteful number, since it uses less digits than its factorization.

9966119966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603967.

The product of its digits is 8503056, while the sum is 62.

The square root of 9966119966 is about 99830.4561043372. The cubic root of 9966119966 is about 2151.9988597385.

The spelling of 9966119966 in words is "nine billion, nine hundred sixty-six million, one hundred nineteen thousand, nine hundred sixty-six".