1665322232868 has 144 divisors (see below), whose sum is σ = 5227497533440. Its totient is φ = 436223102400.

The previous prime is 1665322232813. The next prime is 1665322232891. The reversal of 1665322232868 is 8682322235661.

1665322232868 is a `hidden beast` number, since 1 + 6 + 6 + 5 + 322 + 232 + 86 + 8 = 666.

It is a super-2 number, since 2×1665322232868² (a number of 25 digits) contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 5461438 + ... + 5758293.

Almost surely, 2^{1665322232868} is an apocalyptic number.

1665322232868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1665322232868 is an abundant number, since it is smaller than the sum of its proper divisors (3562175300572).

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

1665322232868 is a wasteful number, since it uses less digits than its factorization.

1665322232868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11219798 (or 11219793 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 54.

The spelling of 1665322232868 in words is "one trillion, six hundred sixty-five billion, three hundred twenty-two million, two hundred thirty-two thousand, eight hundred sixty-eight".