8120579623 has 24 divisors (see below), whose sum is σ = 9157583520. Its totient is φ = 7188854400.

The previous prime is 8120579603. The next prime is 8120579629. The reversal of 8120579623 is 3269750218.

It is a de Polignac number, because none of the positive numbers 2^k-8120579623 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 8120579623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8120579629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 734565 + ... + 745537.

It is an arithmetic number, because the mean of its divisors is an integer number (381565980).

Almost surely, 2^8120579623 is an apocalyptic number.

8120579623 is a deficient number, since it is larger than the sum of its proper divisors (1037003897).

8120579623 is a wasteful number, since it uses less digits than its factorization.

8120579623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11179 (or 11166 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 8120579623 is about 90114.2587108167. The cubic root of 8120579623 is about 2009.9982362632.

The spelling of 8120579623 in words is "eight billion, one hundred twenty million, five hundred seventy-nine thousand, six hundred twenty-three".