320447780516 has 24 divisors (see below), whose sum is σ = 562122394176. Its totient is φ = 159841836000.

The previous prime is 320447780473. The next prime is 320447780519. The reversal of 320447780516 is 615087744023.

It is not an unprimeable number, because it can be changed into a prime (320447780519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2811641 + ... + 2923391.

It is an arithmetic number, because the mean of its divisors is an integer number (23421766424).

Almost surely, 2^320447780516 is an apocalyptic number.

It is an amenable number.

320447780516 is a deficient number, since it is larger than the sum of its proper divisors (241674613660).

320447780516 is a wasteful number, since it uses less digits than its factorization.

320447780516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113459 (or 113457 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 320447780516 in words is "three hundred twenty billion, four hundred forty-seven million, seven hundred eighty thousand, five hundred sixteen".