135256356643 has 8 divisors (see below), whose sum is σ = 135630443520. Its totient is φ = 134882549640.

The previous prime is 135256356617. The next prime is 135256356679. The reversal of 135256356643 is 346653652531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135256356643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135256359643) 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, 917088 + ... + 1054306.

It is an arithmetic number, because the mean of its divisors is an integer number (16953805440).

Almost surely, 2^135256356643 is an apocalyptic number.

135256356643 is a deficient number, since it is larger than the sum of its proper divisors (374086877).

135256356643 is a wasteful number, since it uses less digits than its factorization.

135256356643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139937.

The product of its digits is 5832000, while the sum is 49.

The spelling of 135256356643 in words is "one hundred thirty-five billion, two hundred fifty-six million, three hundred fifty-six thousand, six hundred forty-three".