505212115163 has 4 divisors (see below), whose sum is σ = 577385274480. Its totient is φ = 433038955848.

The previous prime is 505212115157. The next prime is 505212115169. The reversal of 505212115163 is 361511212505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361511212505 = 5 ⋅72302242501.

It is an interprime number because it is at equal distance from previous prime (505212115157) and next prime (505212115169).

It is a cyclic number.

It is not a de Polignac number, because 505212115163 - 2¹² = 505212111067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505212115169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36086579648 + ... + 36086579661.

It is an arithmetic number, because the mean of its divisors is an integer number (144346318620).

Almost surely, 2^505212115163 is an apocalyptic number.

505212115163 is a deficient number, since it is larger than the sum of its proper divisors (72173159317).

505212115163 is an equidigital number, since it uses as much as digits as its factorization.

505212115163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72173159316.

The product of its (nonzero) digits is 9000, while the sum is 32.

Adding to 505212115163 its reverse (361511212505), we get a palindrome (866723327668).

The spelling of 505212115163 in words is "five hundred five billion, two hundred twelve million, one hundred fifteen thousand, one hundred sixty-three".