136404161 has 8 divisors (see below), whose sum is σ = 138984384. Its totient is φ = 133840080.

The previous prime is 136404133. The next prime is 136404167. The reversal of 136404161 is 161404631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136404161 - 2¹⁴ = 136387777 is a prime.

It is a super-2 number, since 2×136404161² = 37212190276227842, which contains 22 as substring.

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 136404161.

It is not an unprimeable number, because it can be changed into a prime (136404167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13751 + ... + 21491.

It is an arithmetic number, because the mean of its divisors is an integer number (17373048).

Almost surely, 2^136404161 is an apocalyptic number.

It is an amenable number.

136404161 is a deficient number, since it is larger than the sum of its proper divisors (2580223).

136404161 is an equidigital number, since it uses as much as digits as its factorization.

136404161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8071.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 136404161 is about 11679.2191947921. The cubic root of 136404161 is about 514.7652318580.

Adding to 136404161 its reverse (161404631), we get a palindrome (297808792).

The spelling of 136404161 in words is "one hundred thirty-six million, four hundred four thousand, one hundred sixty-one".