136778168 has 16 divisors (see below), whose sum is σ = 257389080. Its totient is φ = 68141088.

The previous prime is 136778167. The next prime is 136778203. The reversal of 136778168 is 861877631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136778167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28646 + ... + 33077.

Almost surely, 2^136778168 is an apocalyptic number.

It is an amenable number.

136778168 is a deficient number, since it is larger than the sum of its proper divisors (120610912).

136778168 is a wasteful number, since it uses less digits than its factorization.

136778168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62006 (or 62002 counting only the distinct ones).

The product of its digits is 338688, while the sum is 47.

The square root of 136778168 is about 11695.2198782238. The cubic root of 136778168 is about 515.2352813145.

The spelling of 136778168 in words is "one hundred thirty-six million, seven hundred seventy-eight thousand, one hundred sixty-eight".