163217234256 has 20 divisors (see below), whose sum is σ = 421644521952. Its totient is φ = 54405744736.

The previous prime is 163217234227. The next prime is 163217234267. The reversal of 163217234256 is 652432712361.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1700179476 + ... + 1700179571.

Almost surely, 2^163217234256 is an apocalyptic number.

163217234256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

163217234256 is an abundant number, since it is smaller than the sum of its proper divisors (258427287696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163217234256 is a wasteful number, since it uses less digits than its factorization.

163217234256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400359058 (or 3400359052 counting only the distinct ones).

The product of its digits is 362880, while the sum is 42.

The spelling of 163217234256 in words is "one hundred sixty-three billion, two hundred seventeen million, two hundred thirty-four thousand, two hundred fifty-six".