79266613689 has 10 divisors (see below), whose sum is σ = 118410620570. Its totient is φ = 52844409072.

The previous prime is 79266613669. The next prime is 79266613717. The reversal of 79266613689 is 98631666297.

It can be written as a sum of positive squares in only one way, i.e., 67012123689 + 12254490000 = 258867^2 + 110700^2 .

It is not a de Polignac number, because 79266613689 - 2⁹ = 79266613177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79266613669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 489300004 + ... + 489300165.

It is an arithmetic number, because the mean of its divisors is an integer number (11841062057).

Almost surely, 2^79266613689 is an apocalyptic number.

It is an amenable number.

79266613689 is a deficient number, since it is larger than the sum of its proper divisors (39144006881).

79266613689 is an equidigital number, since it uses as much as digits as its factorization.

79266613689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978600181 (or 978600172 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

The spelling of 79266613689 in words is "seventy-nine billion, two hundred sixty-six million, six hundred thirteen thousand, six hundred eighty-nine".