495129810251 has 2 divisors, whose sum is σ = 495129810252. Its totient is φ = 495129810250.

The previous prime is 495129810239. The next prime is 495129810313. The reversal of 495129810251 is 152018921594.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-495129810251 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 495129810196 and 495129810205.

It is not a weakly prime, because it can be changed into another prime (495129812251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247564905125 + 247564905126.

It is an arithmetic number, because the mean of its divisors is an integer number (247564905126).

Almost surely, 2^495129810251 is an apocalyptic number.

495129810251 is a deficient number, since it is larger than the sum of its proper divisors (1).

495129810251 is an equidigital number, since it uses as much as digits as its factorization.

495129810251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 47.

The spelling of 495129810251 in words is "four hundred ninety-five billion, one hundred twenty-nine million, eight hundred ten thousand, two hundred fifty-one".