1663223987211 has 8 divisors (see below), whose sum is σ = 2237257045200. Its totient is φ = 1099003460352.

The previous prime is 1663223987197. The next prime is 1663223987213. The reversal of 1663223987211 is 1127893223661.

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

It is not a de Polignac number, because 1663223987211 - 2⁶ = 1663223987147 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 2453132386 + ... + 2453133063.

It is an arithmetic number, because the mean of its divisors is an integer number (279657130650).

Almost surely, 2^{1663223987211} is an apocalyptic number.

1663223987211 is a deficient number, since it is larger than the sum of its proper divisors (574033057989).

1663223987211 is a wasteful number, since it uses less digits than its factorization.

1663223987211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4906265565.

The product of its digits is 1306368, while the sum is 51.

The spelling of 1663223987211 in words is "one trillion, six hundred sixty-three billion, two hundred twenty-three million, nine hundred eighty-seven thousand, two hundred eleven".