6662646404042 has 16 divisors (see below), whose sum is σ = 10164452140800. Its totient is φ = 3274507837440.

The previous prime is 6662646404041. The next prime is 6662646404069. The reversal of 6662646404042 is 2404046462666.

It is not an unprimeable number, because it can be changed into a prime (6662646404041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1933367 + ... + 4130762.

It is an arithmetic number, because the mean of its divisors is an integer number (635278258800).

Almost surely, 2^{6662646404042} is an apocalyptic number.

6662646404042 is a deficient number, since it is larger than the sum of its proper divisors (3501805736758).

6662646404042 is a wasteful number, since it uses less digits than its factorization.

6662646404042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6073501.

The product of its (nonzero) digits is 7962624, while the sum is 50.

The spelling of 6662646404042 in words is "six trillion, six hundred sixty-two billion, six hundred forty-six million, four hundred four thousand, forty-two".