163867579891392 has 448 divisors, whose sum is σ = 520571779499520. Its totient is φ = 44942700773376.

The previous prime is 163867579891361. The next prime is 163867579891399. The reversal of 163867579891392 is 293198975768361.

It is not an unprimeable number, because it can be changed into a prime (163867579891399) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2622563383 + ... + 2622625865.

It is an arithmetic number, because the mean of its divisors is an integer number (1161990579240).

Almost surely, 2^{163867579891392} is an apocalyptic number.

163867579891392 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 163867579891392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260285889749760).

163867579891392 is an abundant number, since it is smaller than the sum of its proper divisors (356704199608128).

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

163867579891392 is a wasteful number, since it uses less digits than its factorization.

163867579891392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65800 (or 65790 counting only the distinct ones).

The product of its digits is 7407106560, while the sum is 84.

The spelling of 163867579891392 in words is "one hundred sixty-three trillion, eight hundred sixty-seven billion, five hundred seventy-nine million, eight hundred ninety-one thousand, three hundred ninety-two".