505106172829 has 2 divisors, whose sum is σ = 505106172830. Its totient is φ = 505106172828.

The previous prime is 505106172799. The next prime is 505106172833. The reversal of 505106172829 is 928271601505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504138340729 + 967832100 = 710027^2 + 31110^2 .

It is a cyclic number.

It is not a de Polignac number, because 505106172829 - 2¹⁵ = 505106140061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505106175829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252553086414 + 252553086415.

It is an arithmetic number, because the mean of its divisors is an integer number (252553086415).

Almost surely, 2^505106172829 is an apocalyptic number.

It is an amenable number.

505106172829 is a deficient number, since it is larger than the sum of its proper divisors (1).

505106172829 is an equidigital number, since it uses as much as digits as its factorization.

505106172829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 505106172829 in words is "five hundred five billion, one hundred six million, one hundred seventy-two thousand, eight hundred twenty-nine".