203505545461 has 2 divisors, whose sum is σ = 203505545462. Its totient is φ = 203505545460.

The previous prime is 203505545459. The next prime is 203505545471. The reversal of 203505545461 is 164545505302.

203505545461 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., 199624878436 + 3880667025 = 446794^2 + 62295^2 .

It is a cyclic number.

It is not a de Polignac number, because 203505545461 - 2¹ = 203505545459 is a prime.

Together with 203505545459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203505545431) 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, 101752772730 + 101752772731.

It is an arithmetic number, because the mean of its divisors is an integer number (101752772731).

Almost surely, 2^203505545461 is an apocalyptic number.

It is an amenable number.

203505545461 is a deficient number, since it is larger than the sum of its proper divisors (1).

203505545461 is an equidigital number, since it uses as much as digits as its factorization.

203505545461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 203505545461 in words is "two hundred three billion, five hundred five million, five hundred forty-five thousand, four hundred sixty-one".