320541405020 has 24 divisors (see below), whose sum is σ = 674428981968. Its totient is φ = 127970460800.

The previous prime is 320541404987. The next prime is 320541405031. The reversal of 320541405020 is 20504145023.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15370646 + ... + 15391485.

It is an arithmetic number, because the mean of its divisors is an integer number (28101207582).

Almost surely, 2^320541405020 is an apocalyptic number.

It is an amenable number.

320541405020 is an abundant number, since it is smaller than the sum of its proper divisors (353887576948).

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

320541405020 is a wasteful number, since it uses less digits than its factorization.

320541405020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30762661 (or 30762659 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 320541405020 in words is "three hundred twenty billion, five hundred forty-one million, four hundred five thousand, twenty".