11566560500 has 48 divisors (see below), whose sum is σ = 27557869248. Its totient is φ = 4206020000.

The previous prime is 11566560493. The next prime is 11566560539. The reversal of 11566560500 is 506566511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1046006 + ... + 1057005.

It is an arithmetic number, because the mean of its divisors is an integer number (574122276).

Almost surely, 2^11566560500 is an apocalyptic number.

11566560500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11566560500 is an abundant number, since it is smaller than the sum of its proper divisors (15991308748).

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

11566560500 is a wasteful number, since it uses less digits than its factorization.

11566560500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103041 (or 2103029 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

It can be divided in two parts, 1156 and 6560500, that added together give a palindrome (6561656).

The spelling of 11566560500 in words is "eleven billion, five hundred sixty-six million, five hundred sixty thousand, five hundred".