113566521366 has 64 divisors (see below), whose sum is σ = 263402979840. Its totient is φ = 36201322080.

The previous prime is 113566521361. The next prime is 113566521373. The reversal of 113566521366 is 663125665311.

It is a happy number.

113566521366 is a `hidden beast` number, since 1 + 1 + 3 + 5 + 66 + 521 + 3 + 66 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113566521361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7696756 + ... + 7711496.

It is an arithmetic number, because the mean of its divisors is an integer number (4115671560).

Almost surely, 2^113566521366 is an apocalyptic number.

113566521366 is an abundant number, since it is smaller than the sum of its proper divisors (149836458474).

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

113566521366 is a wasteful number, since it uses less digits than its factorization.

113566521366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20978 (or 20972 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The spelling of 113566521366 in words is "one hundred thirteen billion, five hundred sixty-six million, five hundred twenty-one thousand, three hundred sixty-six".