135813592479 has 4 divisors (see below), whose sum is σ = 181084789976. Its totient is φ = 90542394984.

The previous prime is 135813592471. The next prime is 135813592493. The reversal of 135813592479 is 974295318531.

It is a happy number.

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

It is not a de Polignac number, because 135813592479 - 2³ = 135813592471 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 (135813592471) 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, 22635598744 + ... + 22635598749.

It is an arithmetic number, because the mean of its divisors is an integer number (45271197494).

Almost surely, 2^135813592479 is an apocalyptic number.

135813592479 is a deficient number, since it is larger than the sum of its proper divisors (45271197497).

135813592479 is an equidigital number, since it uses as much as digits as its factorization.

135813592479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45271197496.

The product of its digits is 8164800, while the sum is 57.

The spelling of 135813592479 in words is "one hundred thirty-five billion, eight hundred thirteen million, five hundred ninety-two thousand, four hundred seventy-nine".