13420066057 has 2 divisors, whose sum is σ = 13420066058. Its totient is φ = 13420066056.

The previous prime is 13420066007. The next prime is 13420066061. The reversal of 13420066057 is 75066002431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12044843001 + 1375223056 = 109749^2 + 37084^2 .

It is a cyclic number.

It is not a de Polignac number, because 13420066057 - 2¹⁹ = 13419541769 is a prime.

It is not a weakly prime, because it can be changed into another prime (13420066007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6710033028 + 6710033029.

It is an arithmetic number, because the mean of its divisors is an integer number (6710033029).

Almost surely, 2^13420066057 is an apocalyptic number.

It is an amenable number.

13420066057 is a deficient number, since it is larger than the sum of its proper divisors (1).

13420066057 is an equidigital number, since it uses as much as digits as its factorization.

13420066057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 13420066057 its reverse (75066002431), we get a palindrome (88486068488).

The spelling of 13420066057 in words is "thirteen billion, four hundred twenty million, sixty-six thousand, fifty-seven".