136204161 has 4 divisors (see below), whose sum is σ = 181605552. Its totient is φ = 90802772.

The previous prime is 136204151. The next prime is 136204171. The reversal of 136204161 is 161402631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (136204151) and next prime (136204171).

It is a cyclic number.

It is not a de Polignac number, because 136204161 - 2⁹ = 136203649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136204121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22700691 + ... + 22700696.

It is an arithmetic number, because the mean of its divisors is an integer number (45401388).

Almost surely, 2^136204161 is an apocalyptic number.

It is an amenable number.

136204161 is a deficient number, since it is larger than the sum of its proper divisors (45401391).

136204161 is an equidigital number, since it uses as much as digits as its factorization.

136204161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45401390.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 136204161 is about 11670.6538377248. The cubic root of 136204161 is about 514.5135205605.

Adding to 136204161 its reverse (161402631), we get a palindrome (297606792).

The spelling of 136204161 in words is "one hundred thirty-six million, two hundred four thousand, one hundred sixty-one".