11556555105560 has 32 divisors (see below), whose sum is σ = 26005383668160. Its totient is φ = 4622064765696.

The previous prime is 11556555105547. The next prime is 11556555105593. The reversal of 11556555105560 is 6550155565511.

It is a junction number, because it is equal to n+sod(n) for n = 11556555105499 and 11556555105508.

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, 17078864 + ... + 17742623.

It is an arithmetic number, because the mean of its divisors is an integer number (812668239630).

Almost surely, 2^{11556555105560} is an apocalyptic number.

11556555105560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11556555105560 is an abundant number, since it is smaller than the sum of its proper divisors (14448828562600).

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

11556555105560 is a wasteful number, since it uses less digits than its factorization.

11556555105560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34829795 (or 34829791 counting only the distinct ones).

The product of its (nonzero) digits is 2812500, while the sum is 50.

The spelling of 11556555105560 in words is "eleven trillion, five hundred fifty-six billion, five hundred fifty-five million, one hundred five thousand, five hundred sixty".