135568013578 has 32 divisors (see below), whose sum is σ = 219625888320. Its totient is φ = 62525633280.

The previous prime is 135568013573. The next prime is 135568013591. The reversal of 135568013578 is 875310865531.

It is not an unprimeable number, because it can be changed into a prime (135568013573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 561900 + ... + 766072.

It is an arithmetic number, because the mean of its divisors is an integer number (6863309010).

Almost surely, 2^135568013578 is an apocalyptic number.

135568013578 is a deficient number, since it is larger than the sum of its proper divisors (84057874742).

135568013578 is a wasteful number, since it uses less digits than its factorization.

135568013578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204582.

The product of its (nonzero) digits is 3024000, while the sum is 52.

The spelling of 135568013578 in words is "one hundred thirty-five billion, five hundred sixty-eight million, thirteen thousand, five hundred seventy-eight".