135866945186 has 16 divisors (see below), whose sum is σ = 234201589440. Its totient is φ = 57906984240.

The previous prime is 135866945153. The next prime is 135866945189. The reversal of 135866945186 is 681549668531.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (135866945189) 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, 26806256 + ... + 26811323.

It is an arithmetic number, because the mean of its divisors is an integer number (14637599340).

Almost surely, 2^135866945186 is an apocalyptic number.

135866945186 is a deficient number, since it is larger than the sum of its proper divisors (98334644254).

135866945186 is a wasteful number, since it uses less digits than its factorization.

135866945186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53617769.

The product of its digits is 37324800, while the sum is 62.

The spelling of 135866945186 in words is "one hundred thirty-five billion, eight hundred sixty-six million, nine hundred forty-five thousand, one hundred eighty-six".