13340423121457 has 2 divisors, whose sum is σ = 13340423121458. Its totient is φ = 13340423121456.

The previous prime is 13340423121449. The next prime is 13340423121463. The reversal of 13340423121457 is 75412132404331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6751349968896 + 6589073152561 = 2598336^2 + 2566919^2 .

It is an emirp because it is prime and its reverse (75412132404331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13340423121457 - 2³ = 13340423121449 is a prime.

It is not a weakly prime, because it can be changed into another prime (13340423121497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6670211560728 + 6670211560729.

It is an arithmetic number, because the mean of its divisors is an integer number (6670211560729).

Almost surely, 2^{13340423121457} is an apocalyptic number.

It is an amenable number.

13340423121457 is a deficient number, since it is larger than the sum of its proper divisors (1).

13340423121457 is an equidigital number, since it uses as much as digits as its factorization.

13340423121457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 40.

Adding to 13340423121457 its reverse (75412132404331), we get a palindrome (88752555525788).

The spelling of 13340423121457 in words is "thirteen trillion, three hundred forty billion, four hundred twenty-three million, one hundred twenty-one thousand, four hundred fifty-seven".