320203351125564 has 48 divisors (see below), whose sum is σ = 763629416403840. Its totient is φ = 104404448622400.

The previous prime is 320203351125557. The next prime is 320203351125587. The reversal of 320203351125564 is 465521153302023.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1591430634 + ... + 1591631825.

It is an arithmetic number, because the mean of its divisors is an integer number (15908946175080).

Almost surely, 2^{320203351125564} is an apocalyptic number.

It is an amenable number.

320203351125564 is an abundant number, since it is smaller than the sum of its proper divisors (443426065278276).

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

320203351125564 is a wasteful number, since it uses less digits than its factorization.

320203351125564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183062650 (or 3183062648 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 320203351125564 in words is "three hundred twenty trillion, two hundred three billion, three hundred fifty-one million, one hundred twenty-five thousand, five hundred sixty-four".