320120678743 has 2 divisors, whose sum is σ = 320120678744. Its totient is φ = 320120678742.

The previous prime is 320120678741. The next prime is 320120678767. The reversal of 320120678743 is 347876021023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320120678743 - 2¹ = 320120678741 is a prime.

Together with 320120678741, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 320120678743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320120678741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160060339371 + 160060339372.

It is an arithmetic number, because the mean of its divisors is an integer number (160060339372).

Almost surely, 2^320120678743 is an apocalyptic number.

320120678743 is a deficient number, since it is larger than the sum of its proper divisors (1).

320120678743 is an equidigital number, since it uses as much as digits as its factorization.

320120678743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 43.

Adding to 320120678743 its reverse (347876021023), we get a palindrome (667996699766).

The spelling of 320120678743 in words is "three hundred twenty billion, one hundred twenty million, six hundred seventy-eight thousand, seven hundred forty-three".