8135705979 has 24 divisors (see below), whose sum is σ = 11853104640. Its totient is φ = 5377010688.

The previous prime is 8135705953. The next prime is 8135705983. The reversal of 8135705979 is 9795075318.

8135705979 is a `hidden beast` number, since 8 + 13 + 570 + 59 + 7 + 9 = 666.

It is not a de Polignac number, because 8135705979 - 2⁵ = 8135705947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8135706979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2591899 + ... + 2595035.

It is an arithmetic number, because the mean of its divisors is an integer number (493879360).

Almost surely, 2^8135705979 is an apocalyptic number.

8135705979 is a deficient number, since it is larger than the sum of its proper divisors (3717398661).

8135705979 is a wasteful number, since it uses less digits than its factorization.

8135705979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5539 (or 5536 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 54.

The square root of 8135705979 is about 90198.1484233463. The cubic root of 8135705979 is about 2011.2454826340.

The spelling of 8135705979 in words is "eight billion, one hundred thirty-five million, seven hundred five thousand, nine hundred seventy-nine".