505057879979 has 2 divisors, whose sum is σ = 505057879980. Its totient is φ = 505057879978.

The previous prime is 505057879961. The next prime is 505057880029. The reversal of 505057879979 is 979978750505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505057879979 - 2²⁴ = 505041102763 is a prime.

It is not a weakly prime, because it can be changed into another prime (505056879979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252528939989 + 252528939990.

It is an arithmetic number, because the mean of its divisors is an integer number (252528939990).

Almost surely, 2^505057879979 is an apocalyptic number.

505057879979 is a deficient number, since it is larger than the sum of its proper divisors (1).

505057879979 is an equidigital number, since it uses as much as digits as its factorization.

505057879979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 250047000, while the sum is 71.

The spelling of 505057879979 in words is "five hundred five billion, fifty-seven million, eight hundred seventy-nine thousand, nine hundred seventy-nine".