605605511666 has 8 divisors (see below), whose sum is σ = 908795325360. Its totient is φ = 302673736548.

The previous prime is 605605511653. The next prime is 605605511671. The reversal of 605605511666 is 666115506506.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 605605511666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64503776 + ... + 64513163.

It is an arithmetic number, because the mean of its divisors is an integer number (113599415670).

Almost surely, 2^605605511666 is an apocalyptic number.

605605511666 is a deficient number, since it is larger than the sum of its proper divisors (303189813694).

605605511666 is a wasteful number, since it uses less digits than its factorization.

605605511666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129019288.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 605605511666 in words is "six hundred five billion, six hundred five million, five hundred eleven thousand, six hundred sixty-six".