112517261761 has 4 divisors (see below), whose sum is σ = 113088415572. Its totient is φ = 111946107952.

The previous prime is 112517261707. The next prime is 112517261797. The reversal of 112517261761 is 167162715211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67479933361 + 45037328400 = 259769^2 + 212220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112517261761 is a prime.

It is a super-2 number, since 2×112517261761² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112517261861) 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, 285576610 + ... + 285577003.

It is an arithmetic number, because the mean of its divisors is an integer number (28272103893).

Almost surely, 2^112517261761 is an apocalyptic number.

It is an amenable number.

112517261761 is a deficient number, since it is larger than the sum of its proper divisors (571153811).

112517261761 is an equidigital number, since it uses as much as digits as its factorization.

112517261761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571153810.

The product of its digits is 35280, while the sum is 40.

Adding to 112517261761 its reverse (167162715211), we get a palindrome (279679976972).

The spelling of 112517261761 in words is "one hundred twelve billion, five hundred seventeen million, two hundred sixty-one thousand, seven hundred sixty-one".