13000079917 has 6 divisors (see below), whose sum is σ = 14289344174. Its totient is φ = 11818254360.

The previous prime is 13000079899. The next prime is 13000079929. The reversal of 13000079917 is 71997000031.

It can be written as a sum of positive squares in only one way, i.e., 12389693481 + 610386436 = 111309^2 + 24706^2 .

It is not a de Polignac number, because 13000079917 - 2¹¹ = 13000077869 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 (13000079947) 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 5 ways as a sum of consecutive naturals, for example, 53719218 + ... + 53719459.

Almost surely, 2^13000079917 is an apocalyptic number.

It is an amenable number.

13000079917 is a deficient number, since it is larger than the sum of its proper divisors (1289264257).

13000079917 is a wasteful number, since it uses less digits than its factorization.

13000079917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107438699 (or 107438688 counting only the distinct ones).

The product of its (nonzero) digits is 11907, while the sum is 37.

Adding to 13000079917 its reverse (71997000031), we get a palindrome (84997079948).

The spelling of 13000079917 in words is "thirteen billion, seventy-nine thousand, nine hundred seventeen".