136888442806186 has 4 divisors (see below), whose sum is σ = 205332664209282. Its totient is φ = 68444221403092.

The previous prime is 136888442806183. The next prime is 136888442806187. The reversal of 136888442806186 is 681608244888631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 135886371734961 + 1002071071225 = 11657031^2 + 1001035^2 .

It is not an unprimeable number, because it can be changed into a prime (136888442806183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34222110701545 + ... + 34222110701548.

Almost surely, 2^{136888442806186} is an apocalyptic number.

136888442806186 is a deficient number, since it is larger than the sum of its proper divisors (68444221403096).

136888442806186 is an equidigital number, since it uses as much as digits as its factorization.

136888442806186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68444221403095.

The product of its (nonzero) digits is 679477248, while the sum is 73.

The spelling of 136888442806186 in words is "one hundred thirty-six trillion, eight hundred eighty-eight billion, four hundred forty-two million, eight hundred six thousand, one hundred eighty-six".