163939399360 has 336 divisors, whose sum is σ = 475965499680. Its totient is φ = 53147566080.

The previous prime is 163939399307. The next prime is 163939399363. The reversal of 163939399360 is 63993939361.

It is a super-2 number, since 2×163939399360² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163939399363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21598446 + ... + 21606034.

Almost surely, 2^163939399360 is an apocalyptic number.

163939399360 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 163939399360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237982749840).

163939399360 is an abundant number, since it is smaller than the sum of its proper divisors (312026100320).

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

163939399360 is a wasteful number, since it uses less digits than its factorization.

163939399360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7672 (or 7643 counting only the distinct ones).

The product of its (nonzero) digits is 19131876, while the sum is 61.

The spelling of 163939399360 in words is "one hundred sixty-three billion, nine hundred thirty-nine million, three hundred ninety-nine thousand, three hundred sixty".