163979085312 has 400 divisors, whose sum is σ = 564688143360. Its totient is φ = 46404513792.

The previous prime is 163979085307. The next prime is 163979085313. The reversal of 163979085312 is 213580979361.

163979085312 is a `hidden beast` number, since 1 + 6 + 39 + 79 + 0 + 8 + 531 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163979085313) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31059889 + ... + 31065167.

Almost surely, 2^163979085312 is an apocalyptic number.

163979085312 is a gapful number since it is divisible by the number (12) 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 163979085312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282344071680).

163979085312 is an abundant number, since it is smaller than the sum of its proper divisors (400709058048).

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

163979085312 is an equidigital number, since it uses as much as digits as its factorization.

163979085312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5423 (or 5398 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 163979085312 in words is "one hundred sixty-three billion, nine hundred seventy-nine million, eighty-five thousand, three hundred twelve".