8617556557168 has 80 divisors (see below), whose sum is σ = 19043343786880. Its totient is φ = 3744883590912.

The previous prime is 8617556557163. The next prime is 8617556557243.

8617556557168 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 8617556557097 and 8617556557106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8617556557163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6044646 + ... + 7332997.

It is an arithmetic number, because the mean of its divisors is an integer number (238041797336).

Almost surely, 2^{8617556557168} is an apocalyptic number.

It is an amenable number.

8617556557168 is an abundant number, since it is smaller than the sum of its proper divisors (10425787229712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8617556557168 is a wasteful number, since it uses less digits than its factorization.

8617556557168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13377846 (or 13377840 counting only the distinct ones).

The product of its digits is 423360000, while the sum is 70.

The spelling of 8617556557168 in words is "eight trillion, six hundred seventeen billion, five hundred fifty-six million, five hundred fifty-seven thousand, one hundred sixty-eight".