135013621066 has 16 divisors (see below), whose sum is σ = 204425903880. Its totient is φ = 66871941120.

The previous prime is 135013621063. The next prime is 135013621153. The reversal of 135013621066 is 660126310531.

It can be written as a sum of positive squares in 4 ways, for example, as 101879064225 + 33134556841 = 319185^2 + 182029^2 .

It is not an unprimeable number, because it can be changed into a prime (135013621063) 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, 898410 + ... + 1037866.

Almost surely, 2^135013621066 is an apocalyptic number.

135013621066 is a deficient number, since it is larger than the sum of its proper divisors (69412282814).

135013621066 is a wasteful number, since it uses less digits than its factorization.

135013621066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144009.

The product of its (nonzero) digits is 19440, while the sum is 34.

Adding to 135013621066 its reverse (660126310531), we get a palindrome (795139931597).

The spelling of 135013621066 in words is "one hundred thirty-five billion, thirteen million, six hundred twenty-one thousand, sixty-six".