79545495569 has 8 divisors (see below), whose sum is σ = 79833577320. Its totient is φ = 79257527296.

The previous prime is 79545495527. The next prime is 79545495713. The reversal of 79545495569 is 96559454597.

It can be written as a sum of positive squares in 4 ways, for example, as 22436444944 + 57109050625 = 149788^2 + 238975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79545495569 - 2⁸ = 79545495313 is a prime.

It is a super-2 number, since 2×79545495569² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 79545495499 and 79545495508.

It is not an unprimeable number, because it can be changed into a prime (79545495269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529969 + ... + 1581105.

It is an arithmetic number, because the mean of its divisors is an integer number (9979197165).

Almost surely, 2^79545495569 is an apocalyptic number.

It is an amenable number.

79545495569 is a deficient number, since it is larger than the sum of its proper divisors (288081751).

79545495569 is a wasteful number, since it uses less digits than its factorization.

79545495569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56739.

The product of its digits is 306180000, while the sum is 68.

The spelling of 79545495569 in words is "seventy-nine billion, five hundred forty-five million, four hundred ninety-five thousand, five hundred sixty-nine".