13331212457 has 2 divisors, whose sum is σ = 13331212458. Its totient is φ = 13331212456.

The previous prime is 13331212393. The next prime is 13331212529. The reversal of 13331212457 is 75421213331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9352630681 + 3978581776 = 96709^2 + 63076^2 .

It is a cyclic number.

It is not a de Polignac number, because 13331212457 - 2⁶ = 13331212393 is a prime.

It is not a weakly prime, because it can be changed into another prime (13331211457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6665606228 + 6665606229.

It is an arithmetic number, because the mean of its divisors is an integer number (6665606229).

Almost surely, 2^13331212457 is an apocalyptic number.

It is an amenable number.

13331212457 is a deficient number, since it is larger than the sum of its proper divisors (1).

13331212457 is an equidigital number, since it uses as much as digits as its factorization.

13331212457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

Adding to 13331212457 its reverse (75421213331), we get a palindrome (88752425788).

The spelling of 13331212457 in words is "thirteen billion, three hundred thirty-one million, two hundred twelve thousand, four hundred fifty-seven".