13257164779 has 4 divisors (see below), whose sum is σ = 13273512280. Its totient is φ = 13240817280.

The previous prime is 13257164759. The next prime is 13257164821. The reversal of 13257164779 is 97746175231.

It is a happy number.

13257164779 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, and also an emirpimes, since its reverse is a distinct semiprime: 97746175231 = 117973 ⋅828547.

It is a cyclic number.

It is not a de Polignac number, because 13257164779 - 2¹⁷ = 13257033707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13257164749) 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, 8172534 + ... + 8174155.

It is an arithmetic number, because the mean of its divisors is an integer number (3318378070).

Almost surely, 2^13257164779 is an apocalyptic number.

13257164779 is a deficient number, since it is larger than the sum of its proper divisors (16347501).

13257164779 is an equidigital number, since it uses as much as digits as its factorization.

13257164779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16347500.

The product of its digits is 2222640, while the sum is 52.

The spelling of 13257164779 in words is "thirteen billion, two hundred fifty-seven million, one hundred sixty-four thousand, seven hundred seventy-nine".