321355345005 has 32 divisors (see below), whose sum is σ = 572916885120. Its totient is φ = 170903969280.

The previous prime is 321355344943. The next prime is 321355345033. The reversal of 321355345005 is 500543553123.

It is not a de Polignac number, because 321355345005 - 2³⁰ = 320281603181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3324031 + ... + 3419340.

It is an arithmetic number, because the mean of its divisors is an integer number (17903652660).

Almost surely, 2^321355345005 is an apocalyptic number.

It is an amenable number.

321355345005 is a deficient number, since it is larger than the sum of its proper divisors (251561540115).

321355345005 is a wasteful number, since it uses less digits than its factorization.

321355345005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6743738 (or 6743732 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 36.

Adding to 321355345005 its reverse (500543553123), we get a palindrome (821898898128).

The spelling of 321355345005 in words is "three hundred twenty-one billion, three hundred fifty-five million, three hundred forty-five thousand, five".