6664640410090 has 64 divisors (see below), whose sum is σ = 13195364071680. Its totient is φ = 2408676641280.

The previous prime is 6664640410063. The next prime is 6664640410091. The reversal of 6664640410090 is 900140464666.

It is a self number, because there is not a number n which added to its sum of digits gives 6664640410090.

It is not an unprimeable number, because it can be changed into a prime (6664640410091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1314379 + ... + 3880318.

It is an arithmetic number, because the mean of its divisors is an integer number (206177563620).

Almost surely, 2^{6664640410090} is an apocalyptic number.

6664640410090 is a deficient number, since it is larger than the sum of its proper divisors (6530723661590).

6664640410090 is a wasteful number, since it uses less digits than its factorization.

6664640410090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194927.

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 6664640410090 in words is "six trillion, six hundred sixty-four billion, six hundred forty million, four hundred ten thousand, ninety".