505045459951 has 2 divisors, whose sum is σ = 505045459952. Its totient is φ = 505045459950.

The previous prime is 505045459949. The next prime is 505045460021. The reversal of 505045459951 is 159954540505.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505045459951 - 2¹ = 505045459949 is a prime.

Together with 505045459949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505045459931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252522729975 + 252522729976.

It is an arithmetic number, because the mean of its divisors is an integer number (252522729976).

Almost surely, 2^505045459951 is an apocalyptic number.

505045459951 is a deficient number, since it is larger than the sum of its proper divisors (1).

505045459951 is an equidigital number, since it uses as much as digits as its factorization.

505045459951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050000, while the sum is 52.

The spelling of 505045459951 in words is "five hundred five billion, forty-five million, four hundred fifty-nine thousand, nine hundred fifty-one".