136664135238 has 16 divisors (see below), whose sum is σ = 275747106096. Its totient is φ = 45151572480.

The previous prime is 136664135227. The next prime is 136664135239. The reversal of 136664135238 is 832531466631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136664135239) 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, 100784083 + ... + 100785438.

It is an arithmetic number, because the mean of its divisors is an integer number (17234194131).

Almost surely, 2^136664135238 is an apocalyptic number.

136664135238 is an abundant number, since it is smaller than the sum of its proper divisors (139082970858).

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

136664135238 is a wasteful number, since it uses less digits than its factorization.

136664135238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201569639.

The product of its digits is 1866240, while the sum is 48.

The spelling of 136664135238 in words is "one hundred thirty-six billion, six hundred sixty-four million, one hundred thirty-five thousand, two hundred thirty-eight".