6666565473004 has 6 divisors (see below), whose sum is σ = 11666489577764. Its totient is φ = 3333282736500.

The previous prime is 6666565472969. The next prime is 6666565473017. The reversal of 6666565473004 is 4003745656666.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6666565473004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833320684122 + ... + 833320684129.

Almost surely, 2^{6666565473004} is an apocalyptic number.

It is an amenable number.

6666565473004 is a deficient number, since it is larger than the sum of its proper divisors (4999924104760).

6666565473004 is a wasteful number, since it uses less digits than its factorization.

6666565473004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666641368255 (or 1666641368253 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 58.

The spelling of 6666565473004 in words is "six trillion, six hundred sixty-six billion, five hundred sixty-five million, four hundred seventy-three thousand, four".