135405560571 has 8 divisors (see below), whose sum is σ = 180706842624. Its totient is φ = 90187326120.

The previous prime is 135405560533. The next prime is 135405560581. The reversal of 135405560571 is 175065504531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-135405560571 is a prime.

It is a Smith number, since the sum of its digits (42) 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 (135405560501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20758095 + ... + 20764616.

It is an arithmetic number, because the mean of its divisors is an integer number (22588355328).

Almost surely, 2^135405560571 is an apocalyptic number.

135405560571 is a deficient number, since it is larger than the sum of its proper divisors (45301282053).

135405560571 is a wasteful number, since it uses less digits than its factorization.

135405560571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41523801.

The product of its (nonzero) digits is 315000, while the sum is 42.

The spelling of 135405560571 in words is "one hundred thirty-five billion, four hundred five million, five hundred sixty thousand, five hundred seventy-one".