320000555555 has 8 divisors (see below), whose sum is σ = 392930914992. Its totient is φ = 250046945568.

The previous prime is 320000555551. The next prime is 320000555569. The reversal of 320000555555 is 555555000023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320000555555 - 2² = 320000555551 is a prime.

It is a Duffinian number.

320000555555 is a modest number, since divided by 555555 gives 320000 as remainder.

It is not an unprimeable number, because it can be changed into a prime (320000555551) 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, 744187124 + ... + 744187553.

It is an arithmetic number, because the mean of its divisors is an integer number (49116364374).

Almost surely, 2^320000555555 is an apocalyptic number.

320000555555 is a deficient number, since it is larger than the sum of its proper divisors (72930359437).

320000555555 is a wasteful number, since it uses less digits than its factorization.

320000555555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488374725.

The product of its (nonzero) digits is 93750, while the sum is 35.

Adding to 320000555555 its reverse (555555000023), we get a palindrome (875555555578).

The spelling of 320000555555 in words is "three hundred twenty billion, five hundred fifty-five thousand, five hundred fifty-five".