1668158622236 has 12 divisors (see below), whose sum is σ = 2919510455400. Its totient is φ = 834012777840.

The previous prime is 1668158622191. The next prime is 1668158622239. The reversal of 1668158622236 is 6322268518661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668158622239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16576886 + ... + 16677213.

It is an arithmetic number, because the mean of its divisors is an integer number (243292537950).

Almost surely, 2^{1668158622236} is an apocalyptic number.

It is an amenable number.

1668158622236 is a deficient number, since it is larger than the sum of its proper divisors (1251351833164).

1668158622236 is a wasteful number, since it uses less digits than its factorization.

1668158622236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33266644 (or 33266642 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 56.

The spelling of 1668158622236 in words is "one trillion, six hundred sixty-eight billion, one hundred fifty-eight million, six hundred twenty-two thousand, two hundred thirty-six".