13438113473 has 2 divisors, whose sum is σ = 13438113474. Its totient is φ = 13438113472.

The previous prime is 13438113449. The next prime is 13438113497. The reversal of 13438113473 is 37431183431.

It is a balanced prime because it is at equal distance from previous prime (13438113449) and next prime (13438113497).

It can be written as a sum of positive squares in only one way, i.e., 11076931009 + 2361182464 = 105247^2 + 48592^2 .

It is a cyclic number.

It is not a de Polignac number, because 13438113473 - 2¹⁶ = 13438047937 is a prime.

It is not a weakly prime, because it can be changed into another prime (13438113433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6719056736 + 6719056737.

It is an arithmetic number, because the mean of its divisors is an integer number (6719056737).

Almost surely, 2^13438113473 is an apocalyptic number.

It is an amenable number.

13438113473 is a deficient number, since it is larger than the sum of its proper divisors (1).

13438113473 is an equidigital number, since it uses as much as digits as its factorization.

13438113473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The spelling of 13438113473 in words is "thirteen billion, four hundred thirty-eight million, one hundred thirteen thousand, four hundred seventy-three".