13423404125017 has 2 divisors, whose sum is σ = 13423404125018. Its totient is φ = 13423404125016.

The previous prime is 13423404125009. The next prime is 13423404125039. The reversal of 13423404125017 is 71052140432431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10389411474121 + 3033992650896 = 3223261^2 + 1741836^2 .

It is a cyclic number.

It is not a de Polignac number, because 13423404125017 - 2³ = 13423404125009 is a prime.

It is a super-2 number, since 2×13423404125017² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13423404125057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6711702062508 + 6711702062509.

It is an arithmetic number, because the mean of its divisors is an integer number (6711702062509).

Almost surely, 2^{13423404125017} is an apocalyptic number.

It is an amenable number.

13423404125017 is a deficient number, since it is larger than the sum of its proper divisors (1).

13423404125017 is an equidigital number, since it uses as much as digits as its factorization.

13423404125017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 13423404125017 its reverse (71052140432431), we get a palindrome (84475544557448).

The spelling of 13423404125017 in words is "thirteen trillion, four hundred twenty-three billion, four hundred four million, one hundred twenty-five thousand, seventeen".