13187579329 has 2 divisors, whose sum is σ = 13187579330. Its totient is φ = 13187579328.

The previous prime is 13187579323. The next prime is 13187579351. The reversal of 13187579329 is 92397578131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7513422400 + 5674156929 = 86680^2 + 75327^2 .

It is a cyclic number.

It is not a de Polignac number, because 13187579329 - 2²⁹ = 12650708417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13187579329.

It is not a weakly prime, because it can be changed into another prime (13187579323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6593789664 + 6593789665.

It is an arithmetic number, because the mean of its divisors is an integer number (6593789665).

Almost surely, 2^13187579329 is an apocalyptic number.

It is an amenable number.

13187579329 is a deficient number, since it is larger than the sum of its proper divisors (1).

13187579329 is an equidigital number, since it uses as much as digits as its factorization.

13187579329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 55.

The spelling of 13187579329 in words is "thirteen billion, one hundred eighty-seven million, five hundred seventy-nine thousand, three hundred twenty-nine".