2006665156606 has 16 divisors (see below), whose sum is σ = 3332643356160. Its totient is φ = 898506785880.

The previous prime is 2006665156591. The next prime is 2006665156633. The reversal of 2006665156606 is 6066515666002.

It is a self number, because there is not a number n which added to its sum of digits gives 2006665156606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680685486 + ... + 680688433.

It is an arithmetic number, because the mean of its divisors is an integer number (208290209760).

Almost surely, 2^{2006665156606} is an apocalyptic number.

2006665156606 is a deficient number, since it is larger than the sum of its proper divisors (1325978199554).

2006665156606 is a wasteful number, since it uses less digits than its factorization.

2006665156606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361373999.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 2006665156606 in words is "two trillion, six billion, six hundred sixty-five million, one hundred fifty-six thousand, six hundred six".