605505660109 has 48 divisors (see below), whose sum is σ = 723195006976. Its totient is φ = 496578600000.

The previous prime is 605505660103. The next prime is 605505660131. The reversal of 605505660109 is 901066505506.

It is not a de Polignac number, because 605505660109 - 2⁵ = 605505660077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605505660103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 667591234 + ... + 667592140.

Almost surely, 2^605505660109 is an apocalyptic number.

It is an amenable number.

605505660109 is a deficient number, since it is larger than the sum of its proper divisors (117689346867).

605505660109 is a wasteful number, since it uses less digits than its factorization.

605505660109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874 (or 1845 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 43.

The spelling of 605505660109 in words is "six hundred five billion, five hundred five million, six hundred sixty thousand, one hundred nine".