203426536513 has 2 divisors, whose sum is σ = 203426536514. Its totient is φ = 203426536512.

The previous prime is 203426536477. The next prime is 203426536517. The reversal of 203426536513 is 315635624302.

203426536513 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., 186976678464 + 16449858049 = 432408^2 + 128257^2 .

It is a cyclic number.

It is not a de Polignac number, because 203426536513 - 2¹³ = 203426528321 is a prime.

It is not a weakly prime, because it can be changed into another prime (203426536517) 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, 101713268256 + 101713268257.

It is an arithmetic number, because the mean of its divisors is an integer number (101713268257).

Almost surely, 2^203426536513 is an apocalyptic number.

It is an amenable number.

203426536513 is a deficient number, since it is larger than the sum of its proper divisors (1).

203426536513 is an equidigital number, since it uses as much as digits as its factorization.

203426536513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 40.

The spelling of 203426536513 in words is "two hundred three billion, four hundred twenty-six million, five hundred thirty-six thousand, five hundred thirteen".