163001885904 has 720 divisors, whose sum is σ = 562753481472. Its totient is φ = 43718400000.

The previous prime is 163001885897. The next prime is 163001885929. The reversal of 163001885904 is 409588100361.

163001885904 is a `hidden beast` number, since 1 + 630 + 0 + 1 + 8 + 8 + 5 + 9 + 0 + 4 = 666.

It is a super-2 number, since 2×163001885904² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 163001885904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 649409779 + ... + 649410029.

Almost surely, 2^163001885904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163001885904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281376740736).

163001885904 is an abundant number, since it is smaller than the sum of its proper divisors (399751595568).

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

163001885904 is a wasteful number, since it uses less digits than its factorization.

163001885904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 163001885904 in words is "one hundred sixty-three billion, one million, eight hundred eighty-five thousand, nine hundred four".