136605340161 has 20 divisors (see below), whose sum is σ = 204348672000. Its totient is φ = 90943525656.

The previous prime is 136605340111. The next prime is 136605340163. The reversal of 136605340161 is 161043506631.

136605340161 is a `hidden beast` number, since 1 + 3 + 6 + 60 + 534 + 0 + 1 + 61 = 666.

It is not a de Polignac number, because 136605340161 - 2⁷ = 136605340033 is a prime.

It is a super-2 number, since 2×136605340161² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136605340163) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1114561 + ... + 1231038.

It is an arithmetic number, because the mean of its divisors is an integer number (10217433600).

Almost surely, 2^136605340161 is an apocalyptic number.

It is an amenable number.

136605340161 is a deficient number, since it is larger than the sum of its proper divisors (67743331839).

136605340161 is an equidigital number, since it uses as much as digits as its factorization.

136605340161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346330 (or 2346321 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Adding to 136605340161 its reverse (161043506631), we get a palindrome (297648846792).

The spelling of 136605340161 in words is "one hundred thirty-six billion, six hundred five million, three hundred forty thousand, one hundred sixty-one".