136636133261 has 2 divisors, whose sum is σ = 136636133262. Its totient is φ = 136636133260.

The previous prime is 136636133213. The next prime is 136636133267. The reversal of 136636133261 is 162331636631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129316475236 + 7319658025 = 359606^2 + 85555^2 .

It is a cyclic number.

It is not a de Polignac number, because 136636133261 - 2¹⁸ = 136635871117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136636133267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68318066630 + 68318066631.

It is an arithmetic number, because the mean of its divisors is an integer number (68318066631).

Almost surely, 2^136636133261 is an apocalyptic number.

It is an amenable number.

136636133261 is a deficient number, since it is larger than the sum of its proper divisors (1).

136636133261 is an equidigital number, since it uses as much as digits as its factorization.

136636133261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 41.

Adding to 136636133261 its reverse (162331636631), we get a palindrome (298967769892).

The spelling of 136636133261 in words is "one hundred thirty-six billion, six hundred thirty-six million, one hundred thirty-three thousand, two hundred sixty-one".