113566521365 has 64 divisors (see below), whose sum is σ = 157551264000. Its totient is φ = 77720186880.

The previous prime is 113566521361. The next prime is 113566521373. The reversal of 113566521365 is 563125665311.

It is a happy number.

It is not a de Polignac number, because 113566521365 - 2² = 113566521361 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 136991771 + ... + 136992599.

It is an arithmetic number, because the mean of its divisors is an integer number (2461738500).

Almost surely, 2^113566521365 is an apocalyptic number.

It is an amenable number.

113566521365 is a deficient number, since it is larger than the sum of its proper divisors (43984742635).

113566521365 is a wasteful number, since it uses less digits than its factorization.

113566521365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590.

The product of its digits is 486000, while the sum is 44.

The spelling of 113566521365 in words is "one hundred thirteen billion, five hundred sixty-six million, five hundred twenty-one thousand, three hundred sixty-five".