113204510665 has 4 divisors (see below), whose sum is σ = 135845412804. Its totient is φ = 90563608528.

The previous prime is 113204510663. The next prime is 113204510669. The reversal of 113204510665 is 566015402311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566015402311 = 107 ⋅5289863573.

It can be written as a sum of positive squares in 2 ways, for example, as 83522734009 + 29681776656 = 289003^2 + 172284^2 .

It is a cyclic number.

It is not a de Polignac number, because 113204510665 - 2¹ = 113204510663 is a prime.

It is a super-2 number, since 2×113204510665² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113204510665.

It is not an unprimeable number, because it can be changed into a prime (113204510663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11320451062 + ... + 11320451071.

It is an arithmetic number, because the mean of its divisors is an integer number (33961353201).

Almost surely, 2^113204510665 is an apocalyptic number.

It is an amenable number.

113204510665 is a deficient number, since it is larger than the sum of its proper divisors (22640902139).

113204510665 is an equidigital number, since it uses as much as digits as its factorization.

113204510665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22640902138.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 113204510665 its reverse (566015402311), we get a palindrome (679219912976).

The spelling of 113204510665 in words is "one hundred thirteen billion, two hundred four million, five hundred ten thousand, six hundred sixty-five".