12569343481 has 2 divisors, whose sum is σ = 12569343482. Its totient is φ = 12569343480.

The previous prime is 12569343469. The next prime is 12569343551. The reversal of 12569343481 is 18434396521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7004183481 + 5565160000 = 83691^2 + 74600^2 .

It is a cyclic number.

It is not a de Polignac number, because 12569343481 - 2⁹ = 12569342969 is a prime.

It is a super-2 number, since 2×12569343481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12569343401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6284671740 + 6284671741.

It is an arithmetic number, because the mean of its divisors is an integer number (6284671741).

Almost surely, 2^12569343481 is an apocalyptic number.

It is an amenable number.

12569343481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12569343481 is an equidigital number, since it uses as much as digits as its factorization.

12569343481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 46.

The spelling of 12569343481 in words is "twelve billion, five hundred sixty-nine million, three hundred forty-three thousand, four hundred eighty-one".