505605055079 has 2 divisors, whose sum is σ = 505605055080. Its totient is φ = 505605055078.

The previous prime is 505605055069. The next prime is 505605055091. The reversal of 505605055079 is 970550506505.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505605055079 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 (505605055009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252802527539 + 252802527540.

It is an arithmetic number, because the mean of its divisors is an integer number (252802527540).

Almost surely, 2^505605055079 is an apocalyptic number.

505605055079 is a deficient number, since it is larger than the sum of its proper divisors (1).

505605055079 is an equidigital number, since it uses as much as digits as its factorization.

505605055079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1181250, while the sum is 47.

The spelling of 505605055079 in words is "five hundred five billion, six hundred five million, fifty-five thousand, seventy-nine".