1663223665122 has 64 divisors (see below), whose sum is σ = 3928354560000. Its totient is φ = 520129186704.

The previous prime is 1663223665097. The next prime is 1663223665127. The reversal of 1663223665122 is 2215663223661.

1663223665122 is a `hidden beast` number, since 1 + 6 + 632 + 2 + 3 + 6 + 6 + 5 + 1 + 2 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1663223665127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7763622 + ... + 7974977.

It is an arithmetic number, because the mean of its divisors is an integer number (61380540000).

Almost surely, 2^{1663223665122} is an apocalyptic number.

1663223665122 is an abundant number, since it is smaller than the sum of its proper divisors (2265130894878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1663223665122 is a wasteful number, since it uses less digits than its factorization.

1663223665122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15738732 (or 15738726 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

Adding to 1663223665122 its reverse (2215663223661), we get a palindrome (3878886888783).

The spelling of 1663223665122 in words is "one trillion, six hundred sixty-three billion, two hundred twenty-three million, six hundred sixty-five thousand, one hundred twenty-two".