12755476421329 has 2 divisors, whose sum is σ = 12755476421330. Its totient is φ = 12755476421328.

The previous prime is 12755476421321. The next prime is 12755476421381. The reversal of 12755476421329 is 92312467455721.

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., 7451114686929 + 5304361734400 = 2729673^2 + 2303120^2 .

It is a cyclic number.

It is not a de Polignac number, because 12755476421329 - 2³ = 12755476421321 is a prime.

It is a super-2 number, since 2×12755476421329² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12755476421321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6377738210664 + 6377738210665.

It is an arithmetic number, because the mean of its divisors is an integer number (6377738210665).

Almost surely, 2^{12755476421329} is an apocalyptic number.

It is an amenable number.

12755476421329 is a deficient number, since it is larger than the sum of its proper divisors (1).

12755476421329 is an equidigital number, since it uses as much as digits as its factorization.

12755476421329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25401600, while the sum is 58.

The spelling of 12755476421329 in words is "twelve trillion, seven hundred fifty-five billion, four hundred seventy-six million, four hundred twenty-one thousand, three hundred twenty-nine".