504744606447491 has 2 divisors, whose sum is σ = 504744606447492. Its totient is φ = 504744606447490.

The previous prime is 504744606447391. The next prime is 504744606447541. The reversal of 504744606447491 is 194744606447405.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-504744606447491 is a prime.

It is not a weakly prime, because it can be changed into another prime (504744606447091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252372303223745 + 252372303223746.

It is an arithmetic number, because the mean of its divisors is an integer number (252372303223746).

Almost surely, 2^{504744606447491} is an apocalyptic number.

504744606447491 is a deficient number, since it is larger than the sum of its proper divisors (1).

504744606447491 is an equidigital number, since it uses as much as digits as its factorization.

504744606447491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 325140480, while the sum is 65.

The spelling of 504744606447491 in words is "five hundred four trillion, seven hundred forty-four billion, six hundred six million, four hundred forty-seven thousand, four hundred ninety-one".