163404256808448 has 200 divisors, whose sum is σ = 487864294061760. Its totient is φ = 54451823616000.

The previous prime is 163404256808417. The next prime is 163404256808461. The reversal of 163404256808448 is 844808652404361.

It is a happy number.

163404256808448 is a `hidden beast` number, since 1 + 6 + 34 + 0 + 425 + 68 + 0 + 84 + 48 = 666.

163404256808448 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×163404256808448² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 138717948 + ... + 139890948.

Almost surely, 2^{163404256808448} is an apocalyptic number.

163404256808448 is a gapful number since it is divisible by the number (18) 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 163404256808448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243932147030880).

163404256808448 is an abundant number, since it is smaller than the sum of its proper divisors (324460037253312).

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

163404256808448 is an equidigital number, since it uses as much as digits as its factorization.

163404256808448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176390 (or 1176365 counting only the distinct ones).

The product of its (nonzero) digits is 141557760, while the sum is 63.

The spelling of 163404256808448 in words is "one hundred sixty-three trillion, four hundred four billion, two hundred fifty-six million, eight hundred eight thousand, four hundred forty-eight".