135201661024556 has 12 divisors (see below), whose sum is σ = 270403322049168. Its totient is φ = 57943569010512.

The previous prime is 135201661024519. The next prime is 135201661024559. The reversal of 135201661024556 is 655420166102531.

It is a happy number.

135201661024556 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 135201661024556.

It is not an unprimeable number, because it can be changed into a prime (135201661024559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2414315375411 + ... + 2414315375466.

It is an arithmetic number, because the mean of its divisors is an integer number (22533610170764).

Almost surely, 2^{135201661024556} is an apocalyptic number.

It is an amenable number.

135201661024556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

135201661024556 is a wasteful number, since it uses less digits than its factorization.

135201661024556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4828630750888 (or 4828630750886 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 47.

The spelling of 135201661024556 in words is "one hundred thirty-five trillion, two hundred one billion, six hundred sixty-one million, twenty-four thousand, five hundred fifty-six".