13442640043 has 4 divisors (see below), whose sum is σ = 15363017200. Its totient is φ = 11522262888.

The previous prime is 13442640037. The next prime is 13442640097. The reversal of 13442640043 is 34004624431.

13442640043 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: 34004624431 = 12497 ⋅2721023.

It is a cyclic number.

It is not a de Polignac number, because 13442640043 - 2¹⁷ = 13442508971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13442639987 and 13442640014.

It is not an unprimeable number, because it can be changed into a prime (13442640643) 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, 960188568 + ... + 960188581.

It is an arithmetic number, because the mean of its divisors is an integer number (3840754300).

Almost surely, 2^13442640043 is an apocalyptic number.

13442640043 is a deficient number, since it is larger than the sum of its proper divisors (1920377157).

13442640043 is an equidigital number, since it uses as much as digits as its factorization.

13442640043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920377156.

The product of its (nonzero) digits is 27648, while the sum is 31.

The spelling of 13442640043 in words is "thirteen billion, four hundred forty-two million, six hundred forty thousand, forty-three".