13247771279 has 4 divisors (see below), whose sum is σ = 13248077784. Its totient is φ = 13247464776.

The previous prime is 13247771267. The next prime is 13247771363. The reversal of 13247771279 is 97217774231.

13247771279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13247771279 - 2¹⁶ = 13247705743 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 (13247771179) 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 3 ways as a sum of consecutive naturals, for example, 75152 + ... + 179285.

It is an arithmetic number, because the mean of its divisors is an integer number (3312019446).

Almost surely, 2^13247771279 is an apocalyptic number.

13247771279 is a deficient number, since it is larger than the sum of its proper divisors (306505).

13247771279 is an equidigital number, since it uses as much as digits as its factorization.

13247771279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306504.

The product of its digits is 1037232, while the sum is 50.

The spelling of 13247771279 in words is "thirteen billion, two hundred forty-seven million, seven hundred seventy-one thousand, two hundred seventy-nine".