112161720517 has 8 divisors (see below), whose sum is σ = 139837989312. Its totient is φ = 87398743200.

The previous prime is 112161720511. The next prime is 112161720533. The reversal of 112161720517 is 715027161211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112161720517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112161720511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728322784 + ... + 728322937.

It is an arithmetic number, because the mean of its divisors is an integer number (17479748664).

Almost surely, 2^112161720517 is an apocalyptic number.

It is an amenable number.

112161720517 is a deficient number, since it is larger than the sum of its proper divisors (27676268795).

112161720517 is a wasteful number, since it uses less digits than its factorization.

112161720517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456645739.

The product of its (nonzero) digits is 5880, while the sum is 34.

Adding to 112161720517 its reverse (715027161211), we get a palindrome (827188881728).

The spelling of 112161720517 in words is "one hundred twelve billion, one hundred sixty-one million, seven hundred twenty thousand, five hundred seventeen".