13128383457 has 36 divisors (see below), whose sum is σ = 22075175460. Its totient is φ = 7496520192.

The previous prime is 13128383419. The next prime is 13128383479. The reversal of 13128383457 is 75438382131.

13128383457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5185296081 + 7943087376 = 72009^2 + 89124^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13128383457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13128381457) 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 35 ways as a sum of consecutive naturals, for example, 646653 + ... + 666645.

Almost surely, 2^13128383457 is an apocalyptic number.

It is an amenable number.

13128383457 is a deficient number, since it is larger than the sum of its proper divisors (8946792003).

13128383457 is a wasteful number, since it uses less digits than its factorization.

13128383457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21502 (or 21492 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 13128383457 in words is "thirteen billion, one hundred twenty-eight million, three hundred eighty-three thousand, four hundred fifty-seven".