136168520185 has 8 divisors (see below), whose sum is σ = 163404362880. Its totient is φ = 108933390384.

The previous prime is 136168520183. The next prime is 136168520209. The reversal of 136168520185 is 581025861631.

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

It is a cyclic number.

It is not a de Polignac number, because 136168520185 - 2¹ = 136168520183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136168520183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431856 + ... + 677374.

It is an arithmetic number, because the mean of its divisors is an integer number (20425545360).

Almost surely, 2^136168520185 is an apocalyptic number.

It is an amenable number.

136168520185 is a deficient number, since it is larger than the sum of its proper divisors (27235842695).

136168520185 is a wasteful number, since it uses less digits than its factorization.

136168520185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356447.

The product of its (nonzero) digits is 345600, while the sum is 46.

The spelling of 136168520185 in words is "one hundred thirty-six billion, one hundred sixty-eight million, five hundred twenty thousand, one hundred eighty-five".