666606605006 has 16 divisors (see below), whose sum is σ = 1028282914800. Its totient is φ = 323972582208.

The previous prime is 666606604999. The next prime is 666606605081. The reversal of 666606605006 is 600506606666.

It is a Curzon number.

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, 31726625 + ... + 31747628.

It is an arithmetic number, because the mean of its divisors is an integer number (64267682175).

Almost surely, 2^666606605006 is an apocalyptic number.

666606605006 is a deficient number, since it is larger than the sum of its proper divisors (361676309794).

666606605006 is a wasteful number, since it uses less digits than its factorization.

666606605006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63474403.

The product of its (nonzero) digits is 1399680, while the sum is 47.

The spelling of 666606605006 in words is "six hundred sixty-six billion, six hundred six million, six hundred five thousand, six".