12142325581 has 2 divisors, whose sum is σ = 12142325582. Its totient is φ = 12142325580.

The previous prime is 12142325539. The next prime is 12142325593. The reversal of 12142325581 is 18552324121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11432955625 + 709369956 = 106925^2 + 26634^2 .

It is a cyclic number.

It is not a de Polignac number, because 12142325581 - 2⁷ = 12142325453 is a prime.

It is a super-2 number, since 2×12142325581² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12142325501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6071162790 + 6071162791.

It is an arithmetic number, because the mean of its divisors is an integer number (6071162791).

Almost surely, 2^12142325581 is an apocalyptic number.

It is an amenable number.

12142325581 is a deficient number, since it is larger than the sum of its proper divisors (1).

12142325581 is an equidigital number, since it uses as much as digits as its factorization.

12142325581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 34.

The spelling of 12142325581 in words is "twelve billion, one hundred forty-two million, three hundred twenty-five thousand, five hundred eighty-one".