13426506435869 has 2 divisors, whose sum is σ = 13426506435870. Its totient is φ = 13426506435868.

The previous prime is 13426506435833. The next prime is 13426506435899. The reversal of 13426506435869 is 96853460562431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7981811544100 + 5444694891769 = 2825210^2 + 2333387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13426506435869 is a prime.

It is a super-2 number, since 2×13426506435869² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13426506435899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6713253217934 + 6713253217935.

It is an arithmetic number, because the mean of its divisors is an integer number (6713253217935).

Almost surely, 2^{13426506435869} is an apocalyptic number.

It is an amenable number.

13426506435869 is a deficient number, since it is larger than the sum of its proper divisors (1).

13426506435869 is an equidigital number, since it uses as much as digits as its factorization.

13426506435869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 111974400, while the sum is 62.

The spelling of 13426506435869 in words is "thirteen trillion, four hundred twenty-six billion, five hundred six million, four hundred thirty-five thousand, eight hundred sixty-nine".