505424995769 has 2 divisors, whose sum is σ = 505424995770. Its totient is φ = 505424995768.

The previous prime is 505424995759. The next prime is 505424995807. The reversal of 505424995769 is 967599424505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 505407246400 + 17749369 = 710920^2 + 4213^2 .

It is a cyclic number.

It is not a de Polignac number, because 505424995769 - 2⁴ = 505424995753 is a prime.

It is a super-2 number, since 2×505424995769² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (505424995729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252712497884 + 252712497885.

It is an arithmetic number, because the mean of its divisors is an integer number (252712497885).

Almost surely, 2^505424995769 is an apocalyptic number.

It is an amenable number.

505424995769 is a deficient number, since it is larger than the sum of its proper divisors (1).

505424995769 is an equidigital number, since it uses as much as digits as its factorization.

505424995769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472000, while the sum is 65.

The spelling of 505424995769 in words is "five hundred five billion, four hundred twenty-four million, nine hundred ninety-five thousand, seven hundred sixty-nine".