1243662663422 has 24 divisors (see below), whose sum is σ = 1968354566136. Its totient is φ = 589236299696.

The previous prime is 1243662663391. The next prime is 1243662663431. The reversal of 1243662663422 is 2243662663421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5379713 + ... + 5606124.

It is an arithmetic number, because the mean of its divisors is an integer number (82014773589).

Almost surely, 2^{1243662663422} is an apocalyptic number.

1243662663422 is a deficient number, since it is larger than the sum of its proper divisors (724691902714).

1243662663422 is a wasteful number, since it uses less digits than its factorization.

1243662663422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10985992 (or 10985969 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 47.

Subtracting 1243662663422 from its reverse (2243662663421), we obtain a palindrome (999999999999).

The spelling of 1243662663422 in words is "one trillion, two hundred forty-three billion, six hundred sixty-two million, six hundred sixty-three thousand, four hundred twenty-two".