320043420256 has 48 divisors (see below), whose sum is σ = 720190668960. Its totient is φ = 137143756800.

The previous prime is 320043420251. The next prime is 320043420341. The reversal of 320043420256 is 652024340023.

It is a super-2 number, since 2×320043420256² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320043420251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1726440 + ... + 1902808.

It is an arithmetic number, because the mean of its divisors is an integer number (15003972270).

Almost surely, 2^320043420256 is an apocalyptic number.

It is an amenable number.

320043420256 is an abundant number, since it is smaller than the sum of its proper divisors (400147248704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320043420256 is a wasteful number, since it uses less digits than its factorization.

320043420256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184487 (or 184479 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 320043420256 its reverse (652024340023), we get a palindrome (972067760279).

The spelling of 320043420256 in words is "three hundred twenty billion, forty-three million, four hundred twenty thousand, two hundred fifty-six".