320020403421399 has 16 divisors (see below), whose sum is σ = 435321231171840. Its totient is φ = 209056509983360.

The previous prime is 320020403421377. The next prime is 320020403421419. The reversal of 320020403421399 is 993124304020023.

It is a cyclic number.

It is not a de Polignac number, because 320020403421399 - 2³⁹ = 319470647607511 is a prime.

It is a super-2 number, since 2×320020403421399² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320020403421399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320020403421349) 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, 2906737362 + ... + 2906847455.

It is an arithmetic number, because the mean of its divisors is an integer number (27207576948240).

Almost surely, 2^{320020403421399} is an apocalyptic number.

320020403421399 is a deficient number, since it is larger than the sum of its proper divisors (115300827750441).

320020403421399 is a wasteful number, since it uses less digits than its factorization.

320020403421399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5813585190.

The product of its (nonzero) digits is 279936, while the sum is 42.

The spelling of 320020403421399 in words is "three hundred twenty trillion, twenty billion, four hundred three million, four hundred twenty-one thousand, three hundred ninety-nine".