203445543013 has 2 divisors, whose sum is σ = 203445543014. Its totient is φ = 203445543012.

The previous prime is 203445542917. The next prime is 203445543017. The reversal of 203445543013 is 310345544302.

It is a happy number.

203445543013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201666559329 + 1778983684 = 449073^2 + 42178^2 .

It is a cyclic number.

It is not a de Polignac number, because 203445543013 - 2²⁹ = 202908672101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203445543013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203445543017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101722771506 + 101722771507.

It is an arithmetic number, because the mean of its divisors is an integer number (101722771507).

Almost surely, 2^203445543013 is an apocalyptic number.

It is an amenable number.

203445543013 is a deficient number, since it is larger than the sum of its proper divisors (1).

203445543013 is an equidigital number, since it uses as much as digits as its factorization.

203445543013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 34.

The spelling of 203445543013 in words is "two hundred three billion, four hundred forty-five million, five hundred forty-three thousand, thirteen".