1663943538222 has 96 divisors (see below), whose sum is σ = 4275442828800. Its totient is φ = 457816000320.

The previous prime is 1663943538163. The next prime is 1663943538233. The reversal of 1663943538222 is 2228353493661.

1663943538222 is a `hidden beast` number, since 1 + 6 + 63 + 9 + 4 + 353 + 8 + 222 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1778097 + ... + 2547452.

It is an arithmetic number, because the mean of its divisors is an integer number (44535862800).

Almost surely, 2^{1663943538222} is an apocalyptic number.

1663943538222 is an abundant number, since it is smaller than the sum of its proper divisors (2611499290578).

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

1663943538222 is a wasteful number, since it uses less digits than its factorization.

1663943538222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325678 (or 4325675 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 54.

The spelling of 1663943538222 in words is "one trillion, six hundred sixty-three billion, nine hundred forty-three million, five hundred thirty-eight thousand, two hundred twenty-two".