163316505 has 16 divisors (see below), whose sum is σ = 285061824. Its totient is φ = 79183680.

The previous prime is 163316477. The next prime is 163316567. The reversal of 163316505 is 505613361.

It is not a de Polignac number, because 163316505 - 2⁶ = 163316441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494734 + ... + 495063.

It is an arithmetic number, because the mean of its divisors is an integer number (17816364).

Almost surely, 2^163316505 is an apocalyptic number.

163316505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163316505 is a deficient number, since it is larger than the sum of its proper divisors (121745319).

163316505 is a wasteful number, since it uses less digits than its factorization.

163316505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989816.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 163316505 is about 12779.5346159397. The cubic root of 163316505 is about 546.6088921609.

Adding to 163316505 its reverse (505613361), we get a palindrome (668929866).

The spelling of 163316505 in words is "one hundred sixty-three million, three hundred sixteen thousand, five hundred five".