136556378194 has 8 divisors (see below), whose sum is σ = 205168720140. Its totient is φ = 68166804816.

The previous prime is 136556378093. The next prime is 136556378197. The reversal of 136556378194 is 491873655631.

It can be written as a sum of positive squares in 2 ways, for example, as 117091942969 + 19464435225 = 342187^2 + 139515^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (136556378197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55690609 + ... + 55693060.

Almost surely, 2^136556378194 is an apocalyptic number.

136556378194 is a deficient number, since it is larger than the sum of its proper divisors (68612341946).

136556378194 is a wasteful number, since it uses less digits than its factorization.

136556378194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111384284.

The product of its digits is 16329600, while the sum is 58.

The spelling of 136556378194 in words is "one hundred thirty-six billion, five hundred fifty-six million, three hundred seventy-eight thousand, one hundred ninety-four".