321534320054 has 4 divisors (see below), whose sum is σ = 482301480084. Its totient is φ = 160767160026.

The previous prime is 321534320053. The next prime is 321534320057. The reversal of 321534320054 is 450023435123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 450023435123 = 29 ⋅15518049487.

It is a self number, because there is not a number n which added to its sum of digits gives 321534320054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321534320053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80383580012 + ... + 80383580015.

It is an arithmetic number, because the mean of its divisors is an integer number (120575370021).

Almost surely, 2^321534320054 is an apocalyptic number.

321534320054 is a deficient number, since it is larger than the sum of its proper divisors (160767160030).

321534320054 is a wasteful number, since it uses less digits than its factorization.

321534320054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160767160029.

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 321534320054 its reverse (450023435123), we get a palindrome (771557755177).

The spelling of 321534320054 in words is "three hundred twenty-one billion, five hundred thirty-four million, three hundred twenty thousand, fifty-four".