135258439679 has 4 divisors (see below), whose sum is σ = 147554661480. Its totient is φ = 122962217880.

The previous prime is 135258439637. The next prime is 135258439681. The reversal of 135258439679 is 976934852531.

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-135258439679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135258469679) 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, 6148110884 + ... + 6148110905.

It is an arithmetic number, because the mean of its divisors is an integer number (36888665370).

Almost surely, 2^135258439679 is an apocalyptic number.

135258439679 is a deficient number, since it is larger than the sum of its proper divisors (12296221801).

135258439679 is a wasteful number, since it uses less digits than its factorization.

135258439679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12296221800.

The product of its digits is 48988800, while the sum is 62.

The spelling of 135258439679 in words is "one hundred thirty-five billion, two hundred fifty-eight million, four hundred thirty-nine thousand, six hundred seventy-nine".