13440705137 has 4 divisors (see below), whose sum is σ = 13803967476. Its totient is φ = 13077442800.

The previous prime is 13440705133. The next prime is 13440705143. The reversal of 13440705137 is 73150704431.

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 10912727296 + 2527977841 = 104464^2 + 50279^2 .

It is not a de Polignac number, because 13440705137 - 2² = 13440705133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13440705097 and 13440705106.

It is not an unprimeable number, because it can be changed into a prime (13440705133) 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, 181631114 + ... + 181631187.

It is an arithmetic number, because the mean of its divisors is an integer number (3450991869).

Almost surely, 2^13440705137 is an apocalyptic number.

It is an amenable number.

13440705137 is a deficient number, since it is larger than the sum of its proper divisors (363262339).

13440705137 is an equidigital number, since it uses as much as digits as its factorization.

13440705137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363262338.

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 13440705137 in words is "thirteen billion, four hundred forty million, seven hundred five thousand, one hundred thirty-seven".