505054163777 has 2 divisors, whose sum is σ = 505054163778. Its totient is φ = 505054163776.

The previous prime is 505054163759. The next prime is 505054163813. The reversal of 505054163777 is 777361450505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 433028486401 + 72025677376 = 658049^2 + 268376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505054163777 is a prime.

It is not a weakly prime, because it can be changed into another prime (505054163077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252527081888 + 252527081889.

It is an arithmetic number, because the mean of its divisors is an integer number (252527081889).

Almost surely, 2^505054163777 is an apocalyptic number.

It is an amenable number.

505054163777 is a deficient number, since it is larger than the sum of its proper divisors (1).

505054163777 is an equidigital number, since it uses as much as digits as its factorization.

505054163777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3087000, while the sum is 50.

The spelling of 505054163777 in words is "five hundred five billion, fifty-four million, one hundred sixty-three thousand, seven hundred seventy-seven".