320563513450 has 12 divisors (see below), whose sum is σ = 596248135110. Its totient is φ = 128225405360.

The previous prime is 320563513441. The next prime is 320563513477. The reversal of 320563513450 is 54315365023.

It can be written as a sum of positive squares in 3 ways, for example, as 271354520889 + 49208992561 = 520917^2 + 221831^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3205635085 + ... + 3205635184.

Almost surely, 2^320563513450 is an apocalyptic number.

320563513450 is a deficient number, since it is larger than the sum of its proper divisors (275684621660).

320563513450 is a wasteful number, since it uses less digits than its factorization.

320563513450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6411270281 (or 6411270276 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 37.

Adding to 320563513450 its reverse (54315365023), we get a palindrome (374878878473).

The spelling of 320563513450 in words is "three hundred twenty billion, five hundred sixty-three million, five hundred thirteen thousand, four hundred fifty".