507440478889 has 2 divisors, whose sum is σ = 507440478890. Its totient is φ = 507440478888.

The previous prime is 507440478887. The next prime is 507440478893. The reversal of 507440478889 is 988874044705.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 463543105600 + 43897373289 = 680840^2 + 209517^2 .

It is a cyclic number.

It is not a de Polignac number, because 507440478889 - 2¹ = 507440478887 is a prime.

Together with 507440478887, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 507440478889.

It is not a weakly prime, because it can be changed into another prime (507440478887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253720239444 + 253720239445.

It is an arithmetic number, because the mean of its divisors is an integer number (253720239445).

Almost surely, 2^507440478889 is an apocalyptic number.

It is an amenable number.

507440478889 is a deficient number, since it is larger than the sum of its proper divisors (1).

507440478889 is an equidigital number, since it uses as much as digits as its factorization.

507440478889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72253440, while the sum is 64.

The spelling of 507440478889 in words is "five hundred seven billion, four hundred forty million, four hundred seventy-eight thousand, eight hundred eighty-nine".