507129546449 has 2 divisors, whose sum is σ = 507129546450. Its totient is φ = 507129546448.

The previous prime is 507129546337. The next prime is 507129546463. The reversal of 507129546449 is 944645921705.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481869212224 + 25260334225 = 694168^2 + 158935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-507129546449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 507129546394 and 507129546403.

It is not a weakly prime, because it can be changed into another prime (507129546949) 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, 253564773224 + 253564773225.

It is an arithmetic number, because the mean of its divisors is an integer number (253564773225).

Almost surely, 2^507129546449 is an apocalyptic number.

It is an amenable number.

507129546449 is a deficient number, since it is larger than the sum of its proper divisors (1).

507129546449 is an equidigital number, since it uses as much as digits as its factorization.

507129546449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 507129546449 in words is "five hundred seven billion, one hundred twenty-nine million, five hundred forty-six thousand, four hundred forty-nine".