320423120402399 has 16 divisors (see below), whose sum is σ = 393338186784000. Its totient is φ = 260193210547032.

The previous prime is 320423120402299. The next prime is 320423120402419. The reversal of 320423120402399 is 993204021324023.

It is not a de Polignac number, because 320423120402399 - 2⁴⁰ = 319323608774623 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 (320423120402299) 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, 24583630157 + ... + 24583643190.

It is an arithmetic number, because the mean of its divisors is an integer number (24583636674000).

Almost surely, 2^{320423120402399} is an apocalyptic number.

320423120402399 is a deficient number, since it is larger than the sum of its proper divisors (72915066381601).

320423120402399 is an equidigital number, since it uses as much as digits as its factorization.

320423120402399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49167273387 (or 49167273373 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 44.

The spelling of 320423120402399 in words is "three hundred twenty trillion, four hundred twenty-three billion, one hundred twenty million, four hundred two thousand, three hundred ninety-nine".