501444794369 has 2 divisors, whose sum is σ = 501444794370. Its totient is φ = 501444794368.

The previous prime is 501444794303. The next prime is 501444794371. The reversal of 501444794369 is 963497444105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253950484225 + 247494310144 = 503935^2 + 497488^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501444794369 is a prime.

It is a super-2 number, since 2×501444794369² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 501444794371, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (501444791369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250722397184 + 250722397185.

It is an arithmetic number, because the mean of its divisors is an integer number (250722397185).

Almost surely, 2^501444794369 is an apocalyptic number.

It is an amenable number.

501444794369 is a deficient number, since it is larger than the sum of its proper divisors (1).

501444794369 is an equidigital number, since it uses as much as digits as its factorization.

501444794369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 501444794369 in words is "five hundred one billion, four hundred forty-four million, seven hundred ninety-four thousand, three hundred sixty-nine".