320543246550671 has 16 divisors (see below), whose sum is σ = 343528837520640. Its totient is φ = 298425230691840.

The previous prime is 320543246550641. The next prime is 320543246550679. The reversal of 320543246550671 is 176055642345023.

It is a cyclic number.

It is not a de Polignac number, because 320543246550671 - 2⁴² = 316145200039567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320543246550679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 643352666 + ... + 643850711.

It is an arithmetic number, because the mean of its divisors is an integer number (21470552345040).

Almost surely, 2^{320543246550671} is an apocalyptic number.

320543246550671 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

320543246550671 is a deficient number, since it is larger than the sum of its proper divisors (22985590969969).

320543246550671 is a wasteful number, since it uses less digits than its factorization.

320543246550671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287203714.

The product of its (nonzero) digits is 18144000, while the sum is 53.

Adding to 320543246550671 its reverse (176055642345023), we get a palindrome (496598888895694).

The spelling of 320543246550671 in words is "three hundred twenty trillion, five hundred forty-three billion, two hundred forty-six million, five hundred fifty thousand, six hundred seventy-one".