1668296653812 has 48 divisors (see below), whose sum is σ = 4327238110720. Its totient is φ = 555838583616.

The previous prime is 1668296653763. The next prime is 1668296653823. The reversal of 1668296653812 is 2183566928661.

It is a happy number.

1668296653812 is a `hidden beast` number, since 1 + 6 + 6 + 8 + 2 + 96 + 6 + 538 + 1 + 2 = 666.

It is a super-3 number, since 3×1668296653812³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1668296653812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3383428 + ... + 3845019.

Almost surely, 2^{1668296653812} is an apocalyptic number.

1668296653812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1668296653812 is an abundant number, since it is smaller than the sum of its proper divisors (2658941456908).

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

1668296653812 is a wasteful number, since it uses less digits than its factorization.

1668296653812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7230597 (or 7230589 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 1668296653812 in words is "one trillion, six hundred sixty-eight billion, two hundred ninety-six million, six hundred fifty-three thousand, eight hundred twelve".