503107478009 has 2 divisors, whose sum is σ = 503107478010. Its totient is φ = 503107478008.

The previous prime is 503107477987. The next prime is 503107478011. The reversal of 503107478009 is 900874701305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329214307984 + 173893170025 = 573772^2 + 417005^2 .

It is a cyclic number.

It is not a de Polignac number, because 503107478009 - 2⁸ = 503107477753 is a prime.

Together with 503107478011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (503107478099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251553739004 + 251553739005.

It is an arithmetic number, because the mean of its divisors is an integer number (251553739005).

Almost surely, 2^503107478009 is an apocalyptic number.

It is an amenable number.

503107478009 is a deficient number, since it is larger than the sum of its proper divisors (1).

503107478009 is an equidigital number, since it uses as much as digits as its factorization.

503107478009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 503107478009 in words is "five hundred three billion, one hundred seven million, four hundred seventy-eight thousand, nine".