135600121636 has 24 divisors (see below), whose sum is σ = 272767884480. Its totient is φ = 57778414752.

The previous prime is 135600121589. The next prime is 135600121667. The reversal of 135600121636 is 636121006531.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13991866 + ... + 14001553.

It is an arithmetic number, because the mean of its divisors is an integer number (11365328520).

Almost surely, 2^135600121636 is an apocalyptic number.

It is an amenable number.

135600121636 is an abundant number, since it is smaller than the sum of its proper divisors (137167762844).

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

135600121636 is a wasteful number, since it uses less digits than its factorization.

135600121636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27993603 (or 27993601 counting only the distinct ones).

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

The spelling of 135600121636 in words is "one hundred thirty-five billion, six hundred million, one hundred twenty-one thousand, six hundred thirty-six".