505550050069 has 2 divisors, whose sum is σ = 505550050070. Its totient is φ = 505550050068.

The previous prime is 505550050007. The next prime is 505550050099. The reversal of 505550050069 is 960050055505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501176211844 + 4373838225 = 707938^2 + 66135^2 .

It is a cyclic number.

It is not a de Polignac number, because 505550050069 - 2¹⁹ = 505549525781 is a prime.

It is a super-2 number, since 2×505550050069² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505550050099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252775025034 + 252775025035.

It is an arithmetic number, because the mean of its divisors is an integer number (252775025035).

Almost surely, 2^505550050069 is an apocalyptic number.

It is an amenable number.

505550050069 is a deficient number, since it is larger than the sum of its proper divisors (1).

505550050069 is an equidigital number, since it uses as much as digits as its factorization.

505550050069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168750, while the sum is 40.

The spelling of 505550050069 in words is "five hundred five billion, five hundred fifty million, fifty thousand, sixty-nine".