136080306881 has 4 divisors (see below), whose sum is σ = 136192124292. Its totient is φ = 135968489472.

The previous prime is 136080306853. The next prime is 136080306893. The reversal of 136080306881 is 188603080631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 188603080631 = 7 ⋅26943297233.

It can be written as a sum of positive squares in 2 ways, for example, as 87154848400 + 48925458481 = 295220^2 + 221191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136080306881 is a prime.

It is a super-2 number, since 2×136080306881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136080306811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55906880 + ... + 55909313.

It is an arithmetic number, because the mean of its divisors is an integer number (34048031073).

Almost surely, 2^136080306881 is an apocalyptic number.

It is an amenable number.

136080306881 is a deficient number, since it is larger than the sum of its proper divisors (111817411).

136080306881 is a wasteful number, since it uses less digits than its factorization.

136080306881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111817410.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 136080306881 in words is "one hundred thirty-six billion, eighty million, three hundred six thousand, eight hundred eighty-one".