135512042443 has 4 divisors (see below), whose sum is σ = 135535952160. Its totient is φ = 135488132728.

The previous prime is 135512042437. The next prime is 135512042467. The reversal of 135512042443 is 344240215531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135512042443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135512042399 and 135512042408.

It is not an unprimeable number, because it can be changed into a prime (135512042483) 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, 11946355 + ... + 11957692.

It is an arithmetic number, because the mean of its divisors is an integer number (33883988040).

Almost surely, 2^135512042443 is an apocalyptic number.

135512042443 is a deficient number, since it is larger than the sum of its proper divisors (23909717).

135512042443 is an equidigital number, since it uses as much as digits as its factorization.

135512042443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23909716.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 135512042443 its reverse (344240215531), we get a palindrome (479752257974).

The spelling of 135512042443 in words is "one hundred thirty-five billion, five hundred twelve million, forty-two thousand, four hundred forty-three".