1666666800228 has 96 divisors (see below), whose sum is σ = 3956559280128. Its totient is φ = 545930985600.

The previous prime is 1666666800223. The next prime is 1666666800251. The reversal of 1666666800228 is 8220086666661.

It is not an unprimeable number, because it can be changed into a prime (1666666800223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 957303438 + ... + 957305178.

It is an arithmetic number, because the mean of its divisors is an integer number (41214159168).

Almost surely, 2^{1666666800228} is an apocalyptic number.

It is an amenable number.

1666666800228 is an abundant number, since it is smaller than the sum of its proper divisors (2289892479900).

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

1666666800228 is a wasteful number, since it uses less digits than its factorization.

1666666800228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033 (or 4031 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 57.

The spelling of 1666666800228 in words is "one trillion, six hundred sixty-six billion, six hundred sixty-six million, eight hundred thousand, two hundred twenty-eight".