320242265478 has 96 divisors (see below), whose sum is σ = 720805456800. Its totient is φ = 102686588928.

The previous prime is 320242265471. The next prime is 320242265509. The reversal of 320242265478 is 874562242023.

320242265478 is a `hidden beast` number, since 320 + 24 + 2 + 265 + 47 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320242265471) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17694658 + ... + 17712746.

It is an arithmetic number, because the mean of its divisors is an integer number (7508390175).

Almost surely, 2^320242265478 is an apocalyptic number.

320242265478 is an abundant number, since it is smaller than the sum of its proper divisors (400563191322).

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

320242265478 is a wasteful number, since it uses less digits than its factorization.

320242265478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18486 (or 18483 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 45.

The spelling of 320242265478 in words is "three hundred twenty billion, two hundred forty-two million, two hundred sixty-five thousand, four hundred seventy-eight".