124505663209 has 2 divisors, whose sum is σ = 124505663210. Its totient is φ = 124505663208.

The previous prime is 124505663167. The next prime is 124505663279. The reversal of 124505663209 is 902366505421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88329623209 + 36176040000 = 297203^2 + 190200^2 .

It is an emirp because it is prime and its reverse (902366505421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124505663209 - 2¹³ = 124505655017 is a prime.

It is a super-2 number, since 2×124505663209² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (124505663279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62252831604 + 62252831605.

It is an arithmetic number, because the mean of its divisors is an integer number (62252831605).

Almost surely, 2^124505663209 is an apocalyptic number.

It is an amenable number.

124505663209 is a deficient number, since it is larger than the sum of its proper divisors (1).

124505663209 is an equidigital number, since it uses as much as digits as its factorization.

124505663209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 124505663209 in words is "one hundred twenty-four billion, five hundred five million, six hundred sixty-three thousand, two hundred nine".