320400424533 has 16 divisors (see below), whose sum is σ = 488266741760. Its totient is φ = 183071885616.

The previous prime is 320400424507. The next prime is 320400424567. The reversal of 320400424533 is 335424004023.

It is a de Polignac number, because none of the positive numbers 2^k-320400424533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320400424533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320400424573) 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, 303385 + ... + 856062.

It is an arithmetic number, because the mean of its divisors is an integer number (30516671360).

Almost surely, 2^320400424533 is an apocalyptic number.

It is an amenable number.

320400424533 is a deficient number, since it is larger than the sum of its proper divisors (167866317227).

320400424533 is a wasteful number, since it uses less digits than its factorization.

320400424533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172616.

The product of its (nonzero) digits is 34560, while the sum is 30.

Adding to 320400424533 its reverse (335424004023), we get a palindrome (655824428556).

The spelling of 320400424533 in words is "three hundred twenty billion, four hundred million, four hundred twenty-four thousand, five hundred thirty-three".