203251445473 has 2 divisors, whose sum is σ = 203251445474. Its totient is φ = 203251445472.

The previous prime is 203251445417. The next prime is 203251445539. The reversal of 203251445473 is 374544152302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199516768929 + 3734676544 = 446673^2 + 61112^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203251445473 is a prime.

It is a super-4 number, since 4×203251445473⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (203251425473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101625722736 + 101625722737.

It is an arithmetic number, because the mean of its divisors is an integer number (101625722737).

Almost surely, 2^203251445473 is an apocalyptic number.

It is an amenable number.

203251445473 is a deficient number, since it is larger than the sum of its proper divisors (1).

203251445473 is an equidigital number, since it uses as much as digits as its factorization.

203251445473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 40.

Adding to 203251445473 its reverse (374544152302), we get a palindrome (577795597775).

The spelling of 203251445473 in words is "two hundred three billion, two hundred fifty-one million, four hundred forty-five thousand, four hundred seventy-three".