13434666779 has 6 divisors (see below), whose sum is σ = 13658521500. Its totient is φ = 13214422680.

The previous prime is 13434666769. The next prime is 13434666809. The reversal of 13434666779 is 97766643431.

It is a happy number.

13434666779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-13434666779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13434666719) 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 5 ways as a sum of consecutive naturals, for example, 1801529 + ... + 1808970.

It is an arithmetic number, because the mean of its divisors is an integer number (2276420250).

Almost surely, 2^13434666779 is an apocalyptic number.

13434666779 is a deficient number, since it is larger than the sum of its proper divisors (223854721).

13434666779 is an frugal number, since it uses more digits than its factorization.

13434666779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610621 (or 3610560 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 56.

The spelling of 13434666779 in words is "thirteen billion, four hundred thirty-four million, six hundred sixty-six thousand, seven hundred seventy-nine".