163705850880 has 352 divisors, whose sum is σ = 615150160128. Its totient is φ = 36632985600.

The previous prime is 163705850837. The next prime is 163705850897. The reversal of 163705850880 is 88058507361.

It is a tau number, because it is divible by the number of its divisors (352).

It is a super-2 number, since 2×163705850880² (a number of 23 digits) contains 22 as substring.

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, 2159215 + ... + 2233745.

Almost surely, 2^163705850880 is an apocalyptic number.

163705850880 is a gapful number since it is divisible by the number (10) 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 163705850880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307575080064).

163705850880 is an abundant number, since it is smaller than the sum of its proper divisors (451444309248).

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

163705850880 is a wasteful number, since it uses less digits than its factorization.

163705850880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74583 (or 74565 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 163705850880 in words is "one hundred sixty-three billion, seven hundred five million, eight hundred fifty thousand, eight hundred eighty".