13441043657 has 4 divisors (see below), whose sum is σ = 13559991060. Its totient is φ = 13322096256.

The previous prime is 13441043639. The next prime is 13441043663. The reversal of 13441043657 is 75634014431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75634014431 = 229 ⋅330279539.

It can be written as a sum of positive squares in 2 ways, for example, as 380211001 + 13060832656 = 19499^2 + 114284^2 .

It is a cyclic number.

It is not a de Polignac number, because 13441043657 - 2¹⁰ = 13441042633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13441043657.

It is not an unprimeable number, because it can be changed into a prime (13441043257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59473532 + ... + 59473757.

It is an arithmetic number, because the mean of its divisors is an integer number (3389997765).

Almost surely, 2^13441043657 is an apocalyptic number.

It is an amenable number.

13441043657 is a deficient number, since it is larger than the sum of its proper divisors (118947403).

13441043657 is a wasteful number, since it uses less digits than its factorization.

13441043657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118947402.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 13441043657 in words is "thirteen billion, four hundred forty-one million, forty-three thousand, six hundred fifty-seven".