11977845606 has 12 divisors (see below), whose sum is σ = 25951998852. Its totient is φ = 3992615196.

The previous prime is 11977845587. The next prime is 11977845623. The reversal of 11977845606 is 60654877911.

11977845606 is a `hidden beast` number, since 1 + 1 + 9 + 7 + 78 + 4 + 560 + 6 = 666.

It is a super-2 number, since 2×11977845606² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 332717916 + ... + 332717951.

It is an arithmetic number, because the mean of its divisors is an integer number (2162666571).

Almost surely, 2^11977845606 is an apocalyptic number.

11977845606 is an abundant number, since it is smaller than the sum of its proper divisors (13974153246).

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

11977845606 is a wasteful number, since it uses less digits than its factorization.

11977845606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665435875 (or 665435872 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 11977845606 in words is "eleven billion, nine hundred seventy-seven million, eight hundred forty-five thousand, six hundred six".