135955955447 has 4 divisors (see below), whose sum is σ = 146414105880. Its totient is φ = 125497805016.

The previous prime is 135955955417. The next prime is 135955955449. The reversal of 135955955447 is 744559559531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744559559531 = 58897 ⋅12641723.

It is a cyclic number.

It is not a de Polignac number, because 135955955447 - 2¹⁶ = 135955889911 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 135955955447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135955955449) 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, 5229075197 + ... + 5229075222.

It is an arithmetic number, because the mean of its divisors is an integer number (36603526470).

Almost surely, 2^135955955447 is an apocalyptic number.

135955955447 is a deficient number, since it is larger than the sum of its proper divisors (10458150433).

135955955447 is a wasteful number, since it uses less digits than its factorization.

135955955447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10458150432.

The product of its digits is 85050000, while the sum is 62.

The spelling of 135955955447 in words is "one hundred thirty-five billion, nine hundred fifty-five million, nine hundred fifty-five thousand, four hundred forty-seven".