13426998881 has 2 divisors, whose sum is σ = 13426998882. Its totient is φ = 13426998880.

The previous prime is 13426998877. The next prime is 13426998899. The reversal of 13426998881 is 18889962431.

13426998881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13413345856 + 13653025 = 115816^2 + 3695^2 .

It is a cyclic number.

It is not a de Polignac number, because 13426998881 - 2² = 13426998877 is a prime.

It is a super-2 number, since 2×13426998881² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13426998881.

It is not a weakly prime, because it can be changed into another prime (13426998181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6713499440 + 6713499441.

It is an arithmetic number, because the mean of its divisors is an integer number (6713499441).

Almost surely, 2^13426998881 is an apocalyptic number.

It is an amenable number.

13426998881 is a deficient number, since it is larger than the sum of its proper divisors (1).

13426998881 is an equidigital number, since it uses as much as digits as its factorization.

13426998881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5971968, while the sum is 59.

The spelling of 13426998881 in words is "thirteen billion, four hundred twenty-six million, nine hundred ninety-eight thousand, eight hundred eighty-one".