163273780605 has 24 divisors (see below), whose sum is σ = 282879075168. Its totient is φ = 80380936896.

The previous prime is 163273780601. The next prime is 163273780687. The reversal of 163273780605 is 506087372361.

It is not a de Polignac number, because 163273780605 - 2² = 163273780601 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163273780601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32201367 + ... + 32206436.

It is an arithmetic number, because the mean of its divisors is an integer number (11786628132).

Almost surely, 2^163273780605 is an apocalyptic number.

163273780605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163273780605 is a deficient number, since it is larger than the sum of its proper divisors (119605294563).

163273780605 is a wasteful number, since it uses less digits than its factorization.

163273780605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64407837 (or 64407824 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 163273780605 in words is "one hundred sixty-three billion, two hundred seventy-three million, seven hundred eighty thousand, six hundred five".