136728681366 has 16 divisors (see below), whose sum is σ = 273463847424. Its totient is φ = 45575146344.

The previous prime is 136728681361. The next prime is 136728681377. The reversal of 136728681366 is 663186827631.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136728681361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29475 + ... + 523761.

It is an arithmetic number, because the mean of its divisors is an integer number (17091490464).

Almost surely, 2^136728681366 is an apocalyptic number.

136728681366 is an abundant number, since it is smaller than the sum of its proper divisors (136735166058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136728681366 is a wasteful number, since it uses less digits than its factorization.

136728681366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540395.

The product of its digits is 10450944, while the sum is 57.

The spelling of 136728681366 in words is "one hundred thirty-six billion, seven hundred twenty-eight million, six hundred eighty-one thousand, three hundred sixty-six".