136410681637 has 2 divisors, whose sum is σ = 136410681638. Its totient is φ = 136410681636.

The previous prime is 136410681571. The next prime is 136410681647. The reversal of 136410681637 is 736186014631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75444158241 + 60966523396 = 274671^2 + 246914^2 .

It is a cyclic number.

It is not a de Polignac number, because 136410681637 - 2⁷ = 136410681509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136410681647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68205340818 + 68205340819.

It is an arithmetic number, because the mean of its divisors is an integer number (68205340819).

Almost surely, 2^136410681637 is an apocalyptic number.

It is an amenable number.

136410681637 is a deficient number, since it is larger than the sum of its proper divisors (1).

136410681637 is an equidigital number, since it uses as much as digits as its factorization.

136410681637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 136410681637 in words is "one hundred thirty-six billion, four hundred ten million, six hundred eighty-one thousand, six hundred thirty-seven".