8155116617 has 4 divisors (see below), whose sum is σ = 8160662016. Its totient is φ = 8149571220.

The previous prime is 8155116589. The next prime is 8155116623. The reversal of 8155116617 is 7166115518.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8155116617 - 2¹² = 8155112521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8155116637) 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, 2770493 + ... + 2773434.

It is an arithmetic number, because the mean of its divisors is an integer number (2040165504).

Almost surely, 2^8155116617 is an apocalyptic number.

It is an amenable number.

8155116617 is a deficient number, since it is larger than the sum of its proper divisors (5545399).

8155116617 is a wasteful number, since it uses less digits than its factorization.

8155116617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5545398.

The product of its digits is 50400, while the sum is 41.

The square root of 8155116617 is about 90305.6843006020. The cubic root of 8155116617 is about 2012.8437275218.

The spelling of 8155116617 in words is "eight billion, one hundred fifty-five million, one hundred sixteen thousand, six hundred seventeen".