136201449409 has 2 divisors, whose sum is σ = 136201449410. Its totient is φ = 136201449408.

The previous prime is 136201449379. The next prime is 136201449431. The reversal of 136201449409 is 904944102631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99557918784 + 36643530625 = 315528^2 + 191425^2 .

It is a cyclic number.

It is not a de Polignac number, because 136201449409 - 2¹⁵ = 136201416641 is a prime.

It is a super-2 number, since 2×136201449409² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136201440409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68100724704 + 68100724705.

It is an arithmetic number, because the mean of its divisors is an integer number (68100724705).

Almost surely, 2^136201449409 is an apocalyptic number.

It is an amenable number.

136201449409 is a deficient number, since it is larger than the sum of its proper divisors (1).

136201449409 is an equidigital number, since it uses as much as digits as its factorization.

136201449409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 136201449409 in words is "one hundred thirty-six billion, two hundred one million, four hundred forty-nine thousand, four hundred nine".