505212045017 has 2 divisors, whose sum is σ = 505212045018. Its totient is φ = 505212045016.

The previous prime is 505212045011. The next prime is 505212045049. The reversal of 505212045017 is 710540212505.

It is an a-pointer prime, because the next prime (505212045049) can be obtained adding 505212045017 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504520407616 + 691637401 = 710296^2 + 26299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505212045017 is a prime.

It is not a weakly prime, because it can be changed into another prime (505212045011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252606022508 + 252606022509.

It is an arithmetic number, because the mean of its divisors is an integer number (252606022509).

Almost surely, 2^505212045017 is an apocalyptic number.

It is an amenable number.

505212045017 is a deficient number, since it is larger than the sum of its proper divisors (1).

505212045017 is an equidigital number, since it uses as much as digits as its factorization.

505212045017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14000, while the sum is 32.

The spelling of 505212045017 in words is "five hundred five billion, two hundred twelve million, forty-five thousand, seventeen".