505291255673 has 2 divisors, whose sum is σ = 505291255674. Its totient is φ = 505291255672.

The previous prime is 505291255649. The next prime is 505291255751. The reversal of 505291255673 is 376552192505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283819366009 + 221471889664 = 532747^2 + 470608^2 .

It is a cyclic number.

It is not a de Polignac number, because 505291255673 - 2¹⁶ = 505291190137 is a prime.

It is not a weakly prime, because it can be changed into another prime (505291255643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252645627836 + 252645627837.

It is an arithmetic number, because the mean of its divisors is an integer number (252645627837).

Almost surely, 2^505291255673 is an apocalyptic number.

It is an amenable number.

505291255673 is a deficient number, since it is larger than the sum of its proper divisors (1).

505291255673 is an equidigital number, since it uses as much as digits as its factorization.

505291255673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835000, while the sum is 50.

The spelling of 505291255673 in words is "five hundred five billion, two hundred ninety-one million, two hundred fifty-five thousand, six hundred seventy-three".