505121315354543 has 2 divisors, whose sum is σ = 505121315354544. Its totient is φ = 505121315354542.

The previous prime is 505121315354527. The next prime is 505121315354599. The reversal of 505121315354543 is 345453513121505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505121315354543 - 2⁴ = 505121315354527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505121315354143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252560657677271 + 252560657677272.

It is an arithmetic number, because the mean of its divisors is an integer number (252560657677272).

Almost surely, 2^{505121315354543} is an apocalyptic number.

505121315354543 is a deficient number, since it is larger than the sum of its proper divisors (1).

505121315354543 is an equidigital number, since it uses as much as digits as its factorization.

505121315354543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700000, while the sum is 47.

The spelling of 505121315354543 in words is "five hundred five trillion, one hundred twenty-one billion, three hundred fifteen million, three hundred fifty-four thousand, five hundred forty-three".