320385432676 has 27 divisors (see below), whose sum is σ = 576312767499. Its totient is φ = 155842806528.

The previous prime is 320385432673. The next prime is 320385432677. The reversal of 320385432676 is 676234583023.

The square root of 320385432676 is 566026.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 4568408100 + 315817024576 = 67590^2 + 561976^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320385432671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 41882100 + ... + 41889748.

Almost surely, 2^320385432676 is an apocalyptic number.

320385432676 is the 566026-th square number.

It is an amenable number.

320385432676 is a deficient number, since it is larger than the sum of its proper divisors (255927334823).

320385432676 is an frugal number, since it uses more digits than its factorization.

320385432676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15376 (or 7688 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 49.

Multiplying 320385432676 by its sum of digits (49), we get a square (15698886201124 = 3962182²).

The spelling of 320385432676 in words is "three hundred twenty billion, three hundred eighty-five million, four hundred thirty-two thousand, six hundred seventy-six".