505036022809 has 2 divisors, whose sum is σ = 505036022810. Its totient is φ = 505036022808.

The previous prime is 505036022791. The next prime is 505036022863. The reversal of 505036022809 is 908220630505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395741646400 + 109294376409 = 629080^2 + 330597^2 .

It is a cyclic number.

It is not a de Polignac number, because 505036022809 - 2¹³ = 505036014617 is a prime.

It is a super-2 number, since 2×505036022809² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (505036422809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252518011404 + 252518011405.

It is an arithmetic number, because the mean of its divisors is an integer number (252518011405).

Almost surely, 2^505036022809 is an apocalyptic number.

It is an amenable number.

505036022809 is a deficient number, since it is larger than the sum of its proper divisors (1).

505036022809 is an equidigital number, since it uses as much as digits as its factorization.

505036022809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 505036022809 in words is "five hundred five billion, thirty-six million, twenty-two thousand, eight hundred nine".