1666666833432 has 64 divisors (see below), whose sum is σ = 4505632542720. Its totient is φ = 511750844928.

The previous prime is 1666666833427. The next prime is 1666666833439. The reversal of 1666666833432 is 2343386666661.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666666833439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43437928 + ... + 43476279.

It is an arithmetic number, because the mean of its divisors is an integer number (70400508480).

Almost surely, 2^{1666666833432} is an apocalyptic number.

1666666833432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1666666833432 is an abundant number, since it is smaller than the sum of its proper divisors (2838965709288).

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

1666666833432 is a wasteful number, since it uses less digits than its factorization.

1666666833432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86914280 (or 86914276 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 60.

The spelling of 1666666833432 in words is "one trillion, six hundred sixty-six billion, six hundred sixty-six million, eight hundred thirty-three thousand, four hundred thirty-two".