11605561500056 has 32 divisors (see below), whose sum is σ = 22519197558000. Its totient is φ = 5600591665536.

The previous prime is 11605561500019. The next prime is 11605561500059. The reversal of 11605561500056 is 65000516550611.

It is a junction number, because it is equal to n+sod(n) for n = 11605561499986 and 11605561500022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11605561500059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8722226 + ... + 9964353.

Almost surely, 2^{11605561500056} is an apocalyptic number.

It is an amenable number.

11605561500056 is a deficient number, since it is larger than the sum of its proper divisors (10913636057944).

11605561500056 is a wasteful number, since it uses less digits than its factorization.

11605561500056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18689291 (or 18689287 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 11605561500056 in words is "eleven trillion, six hundred five billion, five hundred sixty-one million, five hundred thousand, fifty-six".