13543434491 has 2 divisors, whose sum is σ = 13543434492. Its totient is φ = 13543434490.

The previous prime is 13543434481. The next prime is 13543434533. The reversal of 13543434491 is 19443434531.

13543434491 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 is a cyclic number.

It is not a de Polignac number, because 13543434491 - 2³⁰ = 12469692667 is a prime.

It is not a weakly prime, because it can be changed into another prime (13543434431) 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, 6771717245 + 6771717246.

It is an arithmetic number, because the mean of its divisors is an integer number (6771717246).

Almost surely, 2^13543434491 is an apocalyptic number.

13543434491 is a deficient number, since it is larger than the sum of its proper divisors (1).

13543434491 is an equidigital number, since it uses as much as digits as its factorization.

13543434491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 41.

The spelling of 13543434491 in words is "thirteen billion, five hundred forty-three million, four hundred thirty-four thousand, four hundred ninety-one".