163411006505 has 8 divisors (see below), whose sum is σ = 200875969224. Its totient is φ = 127540297600.

The previous prime is 163411006489. The next prime is 163411006519. The reversal of 163411006505 is 505600114361.

It can be written as a sum of positive squares in 4 ways, for example, as 15195246361 + 148215760144 = 123269^2 + 384988^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163411006505 - 2⁴ = 163411006489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398563226 + ... + 398563635.

It is an arithmetic number, because the mean of its divisors is an integer number (25109496153).

Almost surely, 2^163411006505 is an apocalyptic number.

It is an amenable number.

163411006505 is a deficient number, since it is larger than the sum of its proper divisors (37464962719).

163411006505 is an equidigital number, since it uses as much as digits as its factorization.

163411006505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797126907.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 163411006505 in words is "one hundred sixty-three billion, four hundred eleven million, six thousand, five hundred five".