161168494080 has 1280 divisors, whose sum is σ = 633559449600. Its totient is φ = 34504704000.

The previous prime is 161168494031. The next prime is 161168494087. The reversal of 161168494080 is 80494861161.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161168494087) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2040107481 + ... + 2040107559.

It is an arithmetic number, because the mean of its divisors is an integer number (494968320).

Almost surely, 2^161168494080 is an apocalyptic number.

161168494080 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 161168494080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316779724800).

161168494080 is an abundant number, since it is smaller than the sum of its proper divisors (472390955520).

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

161168494080 is a wasteful number, since it uses less digits than its factorization.

161168494080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The spelling of 161168494080 in words is "one hundred sixty-one billion, one hundred sixty-eight million, four hundred ninety-four thousand, eighty".