320307920272 has 10 divisors (see below), whose sum is σ = 620596595558. Its totient is φ = 160153960128.

The previous prime is 320307920263. The next prime is 320307920287. The reversal of 320307920272 is 272029703023.

It can be written as a sum of positive squares in only one way, i.e., 214958340496 + 105349579776 = 463636^2 + 324576^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10009622493 + ... + 10009622524.

Almost surely, 2^320307920272 is an apocalyptic number.

It is an amenable number.

320307920272 is a deficient number, since it is larger than the sum of its proper divisors (300288675286).

320307920272 is a wasteful number, since it uses less digits than its factorization.

320307920272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20019245025 (or 20019245019 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 37.

The spelling of 320307920272 in words is "three hundred twenty billion, three hundred seven million, nine hundred twenty thousand, two hundred seventy-two".