6644662666602 has 32 divisors (see below), whose sum is σ = 13319007452160. Its totient is φ = 2209941241200.

The previous prime is 6644662666601. The next prime is 6644662666613. The reversal of 6644662666602 is 2066662664466.

It is not an unprimeable number, because it can be changed into a prime (6644662666601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41175549 + ... + 41336607.

It is an arithmetic number, because the mean of its divisors is an integer number (416218982880).

Almost surely, 2^{6644662666602} is an apocalyptic number.

6644662666602 is an abundant number, since it is smaller than the sum of its proper divisors (6674344785558).

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

6644662666602 is a wasteful number, since it uses less digits than its factorization.

6644662666602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176378.

The product of its (nonzero) digits is 107495424, while the sum is 60.

The spelling of 6644662666602 in words is "six trillion, six hundred forty-four billion, six hundred sixty-two million, six hundred sixty-six thousand, six hundred two".