320057257772 has 96 divisors (see below), whose sum is σ = 697437393408. Its totient is φ = 125365791744.

The previous prime is 320057257733. The next prime is 320057257829. The reversal of 320057257772 is 277752750023.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9193703 + ... + 9228449.

It is an arithmetic number, because the mean of its divisors is an integer number (7264972848).

Almost surely, 2^320057257772 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 320057257772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348718696704).

320057257772 is an abundant number, since it is smaller than the sum of its proper divisors (377380135636).

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

320057257772 is a wasteful number, since it uses less digits than its factorization.

320057257772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35335 (or 35333 counting only the distinct ones).

The product of its (nonzero) digits is 1440600, while the sum is 47.

The spelling of 320057257772 in words is "three hundred twenty billion, fifty-seven million, two hundred fifty-seven thousand, seven hundred seventy-two".