320258680240 has 20 divisors (see below), whose sum is σ = 744601431744. Its totient is φ = 128103472064.

The previous prime is 320258680229. The next prime is 320258680241. The reversal of 320258680240 is 42086852023.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 320258680193 and 320258680202.

It is not an unprimeable number, because it can be changed into a prime (320258680241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2001616672 + ... + 2001616831.

Almost surely, 2^320258680240 is an apocalyptic number.

It is an amenable number.

320258680240 is an abundant number, since it is smaller than the sum of its proper divisors (424342751504).

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

320258680240 is a wasteful number, since it uses less digits than its factorization.

320258680240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003233516 (or 4003233510 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 320258680240 in words is "three hundred twenty billion, two hundred fifty-eight million, six hundred eighty thousand, two hundred forty".