108813557161 has 9 divisors (see below), whose sum is σ = 110708915293. Its totient is φ = 106950127180.

The previous prime is 108813557131. The next prime is 108813557189. The reversal of 108813557161 is 161755318801.

The square root of 108813557161 is 329869.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 108813557161 - 2³¹ = 106666073513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108813557101) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19459476 + ... + 19465066.

Almost surely, 2^108813557161 is an apocalyptic number.

108813557161 is the 329869-th square number.

108813557161 is the 164935-th centered octagonal number.

It is an amenable number.

108813557161 is a deficient number, since it is larger than the sum of its proper divisors (1895358132).

108813557161 is an frugal number, since it uses more digits than its factorization.

108813557161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11300 (or 5650 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 46.

The spelling of 108813557161 in words is "one hundred eight billion, eight hundred thirteen million, five hundred fifty-seven thousand, one hundred sixty-one".