13434236845 has 4 divisors (see below), whose sum is σ = 16121084220. Its totient is φ = 10747389472.

The previous prime is 13434236821. The next prime is 13434236861. The reversal of 13434236845 is 54863243431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54863243431 = 37 ⋅1482790363.

It can be written as a sum of positive squares in 2 ways, for example, as 2034190404 + 11400046441 = 45102^2 + 106771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13434236845 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1343423680 + ... + 1343423689.

It is an arithmetic number, because the mean of its divisors is an integer number (4030271055).

Almost surely, 2^13434236845 is an apocalyptic number.

It is an amenable number.

13434236845 is a deficient number, since it is larger than the sum of its proper divisors (2686847375).

13434236845 is an equidigital number, since it uses as much as digits as its factorization.

13434236845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686847374.

The product of its digits is 829440, while the sum is 43.

The spelling of 13434236845 in words is "thirteen billion, four hundred thirty-four million, two hundred thirty-six thousand, eight hundred forty-five".