321134243447855 has 8 divisors (see below), whose sum is σ = 386896395294864. Its totient is φ = 255883859320000.

The previous prime is 321134243447761. The next prime is 321134243447869. The reversal of 321134243447855 is 558744342431123.

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

It is not a de Polignac number, because 321134243447855 - 2¹⁸ = 321134243185711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 321134243447855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127941928406 + ... + 127941930915.

It is an arithmetic number, because the mean of its divisors is an integer number (48362049411858).

Almost surely, 2^{321134243447855} is an apocalyptic number.

321134243447855 is a deficient number, since it is larger than the sum of its proper divisors (65762151847009).

321134243447855 is a wasteful number, since it uses less digits than its factorization.

321134243447855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255883859577.

The product of its digits is 38707200, while the sum is 56.

Adding to 321134243447855 its reverse (558744342431123), we get a palindrome (879878585878978).

The spelling of 321134243447855 in words is "three hundred twenty-one trillion, one hundred thirty-four billion, two hundred forty-three million, four hundred forty-seven thousand, eight hundred fifty-five".