320729007168 has 168 divisors, whose sum is σ = 932672776256. Its totient is φ = 105365836800.

The previous prime is 320729007119. The next prime is 320729007293. The reversal of 320729007168 is 861700927023.

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, 12505398 + ... + 12531018.

Almost surely, 2^320729007168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320729007168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466336388128).

320729007168 is an abundant number, since it is smaller than the sum of its proper divisors (611943769088).

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

320729007168 is a wasteful number, since it uses less digits than its factorization.

320729007168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25953 (or 25940 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 320729007168 in words is "three hundred twenty billion, seven hundred twenty-nine million, seven thousand, one hundred sixty-eight".