163969902720 has 1024 divisors, whose sum is σ = 675089856000. Its totient is φ = 37265080320.

The previous prime is 163969902703. The next prime is 163969902721. The reversal of 163969902720 is 27209969361.

It is a super-2 number, since 2×163969902720² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (163969902721) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 174994092 + ... + 174995028.

Almost surely, 2^163969902720 is an apocalyptic number.

163969902720 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 163969902720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337544928000).

163969902720 is an abundant number, since it is smaller than the sum of its proper divisors (511119953280).

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

163969902720 is a wasteful number, since it uses less digits than its factorization.

163969902720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The spelling of 163969902720 in words is "one hundred sixty-three billion, nine hundred sixty-nine million, nine hundred two thousand, seven hundred twenty".