13432321739257 has 2 divisors, whose sum is σ = 13432321739258. Its totient is φ = 13432321739256.

The previous prime is 13432321739219. The next prime is 13432321739293. The reversal of 13432321739257 is 75293712323431.

13432321739257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8751485640681 + 4680836098576 = 2958291^2 + 2163524^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13432321739257 is a prime.

It is not a weakly prime, because it can be changed into another prime (13432321749257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6716160869628 + 6716160869629.

It is an arithmetic number, because the mean of its divisors is an integer number (6716160869629).

Almost surely, 2^{13432321739257} is an apocalyptic number.

It is an amenable number.

13432321739257 is a deficient number, since it is larger than the sum of its proper divisors (1).

13432321739257 is an equidigital number, since it uses as much as digits as its factorization.

13432321739257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5715360, while the sum is 52.

The spelling of 13432321739257 in words is "thirteen trillion, four hundred thirty-two billion, three hundred twenty-one million, seven hundred thirty-nine thousand, two hundred fifty-seven".