161107108992 has 192 divisors, whose sum is σ = 466703415360. Its totient is φ = 53344512000.

The previous prime is 161107108961. The next prime is 161107109041. The reversal of 161107108992 is 299801701161.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195755493 + ... + 195756315.

It is an arithmetic number, because the mean of its divisors is an integer number (2430746955).

Almost surely, 2^161107108992 is an apocalyptic number.

161107108992 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 161107108992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233351707680).

161107108992 is an abundant number, since it is smaller than the sum of its proper divisors (305596306368).

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

161107108992 is a wasteful number, since it uses less digits than its factorization.

161107108992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1756 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 45.

The spelling of 161107108992 in words is "one hundred sixty-one billion, one hundred seven million, one hundred eight thousand, nine hundred ninety-two".