117546383618161 has 9 divisors (see below), whose sum is σ = 119054014561881. Its totient is φ = 116057609044884.

The previous prime is 117546383618107. The next prime is 117546383618203. The reversal of 117546383618161 is 161816383645711.

The square root of 117546383618161 is 10841881.

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

It is not a de Polignac number, because 117546383618161 - 2¹⁷ = 117546383487089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117546383618161.

It is not an unprimeable number, because it can be changed into a prime (117546383618861) 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, 856439980 + ... + 856577218.

It is an arithmetic number, because the mean of its divisors is an integer number (13228223840209).

Almost surely, 2^{117546383618161} is an apocalyptic number.

117546383618161 is the 10841881-st square number.

117546383618161 is the 5420941-st centered octagonal number.

It is an amenable number.

117546383618161 is a deficient number, since it is larger than the sum of its proper divisors (1507630943720).

117546383618161 is an frugal number, since it uses more digits than its factorization.

117546383618161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274636 (or 137318 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 61.

The spelling of 117546383618161 in words is "one hundred seventeen trillion, five hundred forty-six billion, three hundred eighty-three million, six hundred eighteen thousand, one hundred sixty-one".