135842243855 has 8 divisors (see below), whose sum is σ = 163013042832. Its totient is φ = 108672228288.

The previous prime is 135842243777. The next prime is 135842243857. The reversal of 135842243855 is 558342248531.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 135842243855 - 2⁸ = 135842243599 is a prime.

It is a super-2 number, since 2×135842243855² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135842243857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299552 + ... + 601178.

It is an arithmetic number, because the mean of its divisors is an integer number (20376630354).

Almost surely, 2^135842243855 is an apocalyptic number.

135842243855 is a deficient number, since it is larger than the sum of its proper divisors (27170798977).

135842243855 is an equidigital number, since it uses as much as digits as its factorization.

135842243855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391705.

The product of its digits is 4608000, while the sum is 50.

The spelling of 135842243855 in words is "one hundred thirty-five billion, eight hundred forty-two million, two hundred forty-three thousand, eight hundred fifty-five".