13243453057 has 2 divisors, whose sum is σ = 13243453058. Its totient is φ = 13243453056.

The previous prime is 13243453049. The next prime is 13243453087. The reversal of 13243453057 is 75035434231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11388944961 + 1854508096 = 106719^2 + 43064^2 .

It is an emirp because it is prime and its reverse (75035434231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13243453057 - 2³ = 13243453049 is a prime.

It is not a weakly prime, because it can be changed into another prime (13243453087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6621726528 + 6621726529.

It is an arithmetic number, because the mean of its divisors is an integer number (6621726529).

Almost surely, 2^13243453057 is an apocalyptic number.

It is an amenable number.

13243453057 is a deficient number, since it is larger than the sum of its proper divisors (1).

13243453057 is an equidigital number, since it uses as much as digits as its factorization.

13243453057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 37.

Adding to 13243453057 its reverse (75035434231), we get a palindrome (88278887288).

The spelling of 13243453057 in words is "thirteen billion, two hundred forty-three million, four hundred fifty-three thousand, fifty-seven".