505363644067 has 2 divisors, whose sum is σ = 505363644068. Its totient is φ = 505363644066.

The previous prime is 505363644031. The next prime is 505363644091. The reversal of 505363644067 is 760446363505.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505363644067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505363644067.

It is not a weakly prime, because it can be changed into another prime (505363644007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252681822033 + 252681822034.

It is an arithmetic number, because the mean of its divisors is an integer number (252681822034).

Almost surely, 2^505363644067 is an apocalyptic number.

505363644067 is a deficient number, since it is larger than the sum of its proper divisors (1).

505363644067 is an equidigital number, since it uses as much as digits as its factorization.

505363644067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 49.

The spelling of 505363644067 in words is "five hundred five billion, three hundred sixty-three million, six hundred forty-four thousand, sixty-seven".