505157634169 has 2 divisors, whose sum is σ = 505157634170. Its totient is φ = 505157634168.

The previous prime is 505157634139. The next prime is 505157634173. The reversal of 505157634169 is 961436751505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501745555600 + 3412078569 = 708340^2 + 58413^2 .

It is a cyclic number.

It is not a de Polignac number, because 505157634169 - 2⁷ = 505157634041 is a prime.

It is a super-2 number, since 2×505157634169² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (505157634109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252578817084 + 252578817085.

It is an arithmetic number, because the mean of its divisors is an integer number (252578817085).

Almost surely, 2^505157634169 is an apocalyptic number.

It is an amenable number.

505157634169 is a deficient number, since it is larger than the sum of its proper divisors (1).

505157634169 is an equidigital number, since it uses as much as digits as its factorization.

505157634169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402000, while the sum is 52.

The spelling of 505157634169 in words is "five hundred five billion, one hundred fifty-seven million, six hundred thirty-four thousand, one hundred sixty-nine".