1663223987212 has 12 divisors (see below), whose sum is σ = 2910660408936. Its totient is φ = 831606727520.

The previous prime is 1663223987197. The next prime is 1663223987213. The reversal of 1663223987212 is 2127893223661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1663223987212.

It is not an unprimeable number, because it can be changed into a prime (1663223987213) 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, 557233 + ... + 1907080.

It is an arithmetic number, because the mean of its divisors is an integer number (242555034078).

Almost surely, 2^{1663223987212} is an apocalyptic number.

It is an amenable number.

1663223987212 is a deficient number, since it is larger than the sum of its proper divisors (1247436421724).

1663223987212 is a wasteful number, since it uses less digits than its factorization.

1663223987212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633048 (or 2633046 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 52.

The spelling of 1663223987212 in words is "one trillion, six hundred sixty-three billion, two hundred twenty-three million, nine hundred eighty-seven thousand, two hundred twelve".