6666611606000 has 40 divisors (see below), whose sum is σ = 16119866868144. Its totient is φ = 2666644641600.

The previous prime is 6666611605991. The next prime is 6666611606093. The reversal of 6666611606000 is 6061166666.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1666650902 + ... + 1666654901.

Almost surely, 2^{6666611606000} is an apocalyptic number.

It is an amenable number.

6666611606000 is an abundant number, since it is smaller than the sum of its proper divisors (9453255262144).

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

6666611606000 is a wasteful number, since it uses less digits than its factorization.

6666611606000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333305826 (or 3333305810 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 6666611606000 in words is "six trillion, six hundred sixty-six billion, six hundred eleven million, six hundred six thousand".