135645644159 has 4 divisors (see below), whose sum is σ = 136890099720. Its totient is φ = 134401188600.

The previous prime is 135645644137. The next prime is 135645644213. The reversal of 135645644159 is 951446546531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135645644159 - 2²⁴ = 135628866943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135645644159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135645646159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622227617 + ... + 622227834.

It is an arithmetic number, because the mean of its divisors is an integer number (34222524930).

Almost surely, 2^135645644159 is an apocalyptic number.

135645644159 is a deficient number, since it is larger than the sum of its proper divisors (1244455561).

135645644159 is a wasteful number, since it uses less digits than its factorization.

135645644159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244455560.

The product of its digits is 7776000, while the sum is 53.

The spelling of 135645644159 in words is "one hundred thirty-five billion, six hundred forty-five million, six hundred forty-four thousand, one hundred fifty-nine".