136606241281 has 2 divisors, whose sum is σ = 136606241282. Its totient is φ = 136606241280.

The previous prime is 136606241269. The next prime is 136606241311. The reversal of 136606241281 is 182142606631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125256535056 + 11349706225 = 353916^2 + 106535^2 .

It is a cyclic number.

It is not a de Polignac number, because 136606241281 - 2⁹ = 136606240769 is a prime.

It is a super-2 number, since 2×136606241281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136606241081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68303120640 + 68303120641.

It is an arithmetic number, because the mean of its divisors is an integer number (68303120641).

Almost surely, 2^136606241281 is an apocalyptic number.

It is an amenable number.

136606241281 is a deficient number, since it is larger than the sum of its proper divisors (1).

136606241281 is an equidigital number, since it uses as much as digits as its factorization.

136606241281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 136606241281 in words is "one hundred thirty-six billion, six hundred six million, two hundred forty-one thousand, two hundred eighty-one".