135611643 has 8 divisors (see below), whose sum is σ = 181753168. Its totient is φ = 89938944.

The previous prime is 135611629. The next prime is 135611647. The reversal of 135611643 is 346116531.

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

It is not a de Polignac number, because 135611643 - 2⁹ = 135611131 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 135611643.

It is not an unprimeable number, because it can be changed into a prime (135611647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116530 + ... + 117687.

It is an arithmetic number, because the mean of its divisors is an integer number (22719146).

Almost surely, 2^135611643 is an apocalyptic number.

135611643 is a deficient number, since it is larger than the sum of its proper divisors (46141525).

135611643 is a wasteful number, since it uses less digits than its factorization.

135611643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234413.

The product of its digits is 6480, while the sum is 30.

The square root of 135611643 is about 11645.2412169092. The cubic root of 135611643 is about 513.7663538107.

The spelling of 135611643 in words is "one hundred thirty-five million, six hundred eleven thousand, six hundred forty-three".