163981206947712 has 768 divisors, whose sum is σ = 561640820336640. Its totient is φ = 41181621350400.

The previous prime is 163981206947683. The next prime is 163981206947797. The reversal of 163981206947712 is 217749602189361.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 46230955923 + ... + 46230959469.

It is an arithmetic number, because the mean of its divisors is an integer number (731303151480).

Almost surely, 2^{163981206947712} is an apocalyptic number.

163981206947712 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 163981206947712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280820410168320).

163981206947712 is an abundant number, since it is smaller than the sum of its proper divisors (397659613388928).

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

163981206947712 is a wasteful number, since it uses less digits than its factorization.

163981206947712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5271 (or 5228 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 66.

The spelling of 163981206947712 in words is "one hundred sixty-three trillion, nine hundred eighty-one billion, two hundred six million, nine hundred forty-seven thousand, seven hundred twelve".