163234353640256 has 224 divisors, whose sum is σ = 367496045604864. Its totient is φ = 71563788288000.

The previous prime is 163234353640199. The next prime is 163234353640321. The reversal of 163234353640256 is 652046353432361.

It is a junction number, because it is equal to n+sod(n) for n = 163234353640198 and 163234353640207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95854136 + ... + 97542216.

Almost surely, 2^{163234353640256} is an apocalyptic number.

163234353640256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163234353640256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183748022802432).

163234353640256 is an abundant number, since it is smaller than the sum of its proper divisors (204261691964608).

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

163234353640256 is a wasteful number, since it uses less digits than its factorization.

163234353640256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688249 (or 1688239 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 53.

The spelling of 163234353640256 in words is "one hundred sixty-three trillion, two hundred thirty-four billion, three hundred fifty-three million, six hundred forty thousand, two hundred fifty-six".