136383730561 has 4 divisors (see below), whose sum is σ = 146874786772. Its totient is φ = 125892674352.

The previous prime is 136383730541. The next prime is 136383730603. The reversal of 136383730561 is 165037383631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165037383631 = 33617 ⋅4909343.

It can be written as a sum of positive squares in 2 ways, for example, as 16169665600 + 120214064961 = 127160^2 + 346719^2 .

It is a cyclic number.

It is not a de Polignac number, because 136383730561 - 2¹⁹ = 136383206273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136383730541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5245528086 + ... + 5245528111.

It is an arithmetic number, because the mean of its divisors is an integer number (36718696693).

Almost surely, 2^136383730561 is an apocalyptic number.

It is an amenable number.

136383730561 is a deficient number, since it is larger than the sum of its proper divisors (10491056211).

136383730561 is a wasteful number, since it uses less digits than its factorization.

136383730561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10491056210.

The product of its (nonzero) digits is 816480, while the sum is 46.

The spelling of 136383730561 in words is "one hundred thirty-six billion, three hundred eighty-three million, seven hundred thirty thousand, five hundred sixty-one".