503211206401 has 2 divisors, whose sum is σ = 503211206402. Its totient is φ = 503211206400.

The previous prime is 503211206371. The next prime is 503211206423. The reversal of 503211206401 is 104602112305.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 459467065600 + 43744140801 = 677840^2 + 209151^2 .

It is a cyclic number.

It is not a de Polignac number, because 503211206401 - 2³⁷ = 365772252929 is a prime.

It is not a weakly prime, because it can be changed into another prime (503211276401) 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, 251605603200 + 251605603201.

It is an arithmetic number, because the mean of its divisors is an integer number (251605603201).

Almost surely, 2^503211206401 is an apocalyptic number.

It is an amenable number.

503211206401 is a deficient number, since it is larger than the sum of its proper divisors (1).

503211206401 is an equidigital number, since it uses as much as digits as its factorization.

503211206401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 503211206401 its reverse (104602112305), we get a palindrome (607813318706).

The spelling of 503211206401 in words is "five hundred three billion, two hundred eleven million, two hundred six thousand, four hundred one".