136601603261 has 16 divisors (see below), whose sum is σ = 144912208896. Its totient is φ = 128555760000.

The previous prime is 136601603231. The next prime is 136601603279. The reversal of 136601603261 is 162306106631.

It is not a de Polignac number, because 136601603261 - 2³⁴ = 119421734077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136601603231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222491 + ... + 568071.

It is an arithmetic number, because the mean of its divisors is an integer number (9057013056).

Almost surely, 2^136601603261 is an apocalyptic number.

It is an amenable number.

136601603261 is a deficient number, since it is larger than the sum of its proper divisors (8310605635).

136601603261 is a wasteful number, since it uses less digits than its factorization.

136601603261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345964.

The product of its (nonzero) digits is 23328, while the sum is 35.

Adding to 136601603261 its reverse (162306106631), we get a palindrome (298907709892).

The spelling of 136601603261 in words is "one hundred thirty-six billion, six hundred one million, six hundred three thousand, two hundred sixty-one".