13405543542241 has 4 divisors (see below), whose sum is σ = 13461168204484. Its totient is φ = 13349918880000.

The previous prime is 13405543542143. The next prime is 13405543542253. The reversal of 13405543542241 is 14224534550431.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5528141440000 + 7877402102241 = 2351200^2 + 2806671^2 .

It is a cyclic number.

It is not a de Polignac number, because 13405543542241 - 2⁷ = 13405543542113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13405543542271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27812330760 + ... + 27812331241.

It is an arithmetic number, because the mean of its divisors is an integer number (3365292051121).

Almost surely, 2^{13405543542241} is an apocalyptic number.

It is an amenable number.

13405543542241 is a deficient number, since it is larger than the sum of its proper divisors (55624662243).

13405543542241 is an equidigital number, since it uses as much as digits as its factorization.

13405543542241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55624662242.

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 13405543542241 in words is "thirteen trillion, four hundred five billion, five hundred forty-three million, five hundred forty-two thousand, two hundred forty-one".