136168618295161 has 3 divisors (see below), whose sum is σ = 136168629964293. Its totient is φ = 136168606626030.

The previous prime is 136168618295141. The next prime is 136168618295167. The reversal of 136168618295161 is 161592816861631.

The square root of 136168618295161 is 11669131.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-136168618295161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136168618295093 and 136168618295102.

It is not an unprimeable number, because it can be changed into a prime (136168618295167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5834566 + ... + 17503696.

It is an arithmetic number, because the mean of its divisors is an integer number (45389543321431).

Almost surely, 2^{136168618295161} is an apocalyptic number.

136168618295161 is the 11669131-st square number.

136168618295161 is the 5834566-th centered octagonal number.

It is an amenable number.

136168618295161 is a deficient number, since it is larger than the sum of its proper divisors (11669132).

136168618295161 is an frugal number, since it uses more digits than its factorization.

136168618295161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23338262 (or 11669131 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 64.

The spelling of 136168618295161 in words is "one hundred thirty-six trillion, one hundred sixty-eight billion, six hundred eighteen million, two hundred ninety-five thousand, one hundred sixty-one".