12006666005400 has 144 divisors (see below), whose sum is σ = 43988058255960. Its totient is φ = 2910706905600.

The previous prime is 12006666005381. The next prime is 12006666005413. The reversal of 12006666005400 is 450066660021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 303178837 + ... + 303218436.

Almost surely, 2^{12006666005400} is an apocalyptic number.

12006666005400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12006666005400 is an abundant number, since it is smaller than the sum of its proper divisors (31981392250560).

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

12006666005400 is a wasteful number, since it uses less digits than its factorization.

12006666005400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606397306 (or 606397294 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 12006666005400 in words is "twelve trillion, six billion, six hundred sixty-six million, five thousand, four hundred".