135239642863 has 4 divisors (see below), whose sum is σ = 145642692328. Its totient is φ = 124836593400.

The previous prime is 135239642809. The next prime is 135239642873. The reversal of 135239642863 is 368246932531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368246932531 = 23 ⋅16010736197.

It is a cyclic number.

It is not a de Polignac number, because 135239642863 - 2¹⁷ = 135239511791 is a prime.

It is a super-2 number, since 2×135239642863² (a number of 23 digits) contains 22 as substring.

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 135239642863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135239642873) 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, 5201524713 + ... + 5201524738.

It is an arithmetic number, because the mean of its divisors is an integer number (36410673082).

Almost surely, 2^135239642863 is an apocalyptic number.

135239642863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

135239642863 is a deficient number, since it is larger than the sum of its proper divisors (10403049465).

135239642863 is a wasteful number, since it uses less digits than its factorization.

135239642863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10403049464.

The product of its digits is 5598720, while the sum is 52.

The spelling of 135239642863 in words is "one hundred thirty-five billion, two hundred thirty-nine million, six hundred forty-two thousand, eight hundred sixty-three".