13125440431079 has 2 divisors, whose sum is σ = 13125440431080. Its totient is φ = 13125440431078.

The previous prime is 13125440431043. The next prime is 13125440431087. The reversal of 13125440431079 is 97013404452131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13125440431079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13125440431379) 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, 6562720215539 + 6562720215540.

It is an arithmetic number, because the mean of its divisors is an integer number (6562720215540).

Almost surely, 2^{13125440431079} is an apocalyptic number.

13125440431079 is a deficient number, since it is larger than the sum of its proper divisors (1).

13125440431079 is an equidigital number, since it uses as much as digits as its factorization.

13125440431079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 13125440431079 in words is "thirteen trillion, one hundred twenty-five billion, four hundred forty million, four hundred thirty-one thousand, seventy-nine".