505555450073 has 2 divisors, whose sum is σ = 505555450074. Its totient is φ = 505555450072.

The previous prime is 505555450067. The next prime is 505555450157. The reversal of 505555450073 is 370054555505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323023995904 + 182531454169 = 568352^2 + 427237^2 .

It is a cyclic number.

It is not a de Polignac number, because 505555450073 - 2²⁴ = 505538672857 is a prime.

It is not a weakly prime, because it can be changed into another prime (505555450033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252777725036 + 252777725037.

It is an arithmetic number, because the mean of its divisors is an integer number (252777725037).

Almost surely, 2^505555450073 is an apocalyptic number.

It is an amenable number.

505555450073 is a deficient number, since it is larger than the sum of its proper divisors (1).

505555450073 is an equidigital number, since it uses as much as digits as its factorization.

505555450073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1312500, while the sum is 44.

The spelling of 505555450073 in words is "five hundred five billion, five hundred fifty-five million, four hundred fifty thousand, seventy-three".