321410320604651 has 4 divisors (see below), whose sum is σ = 321646478078904. Its totient is φ = 321174163130400.

The previous prime is 321410320604647. The next prime is 321410320604693. The reversal of 321410320604651 is 156406023014123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321410320604651 - 2² = 321410320604647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321410320604621) 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, 118078735085 + ... + 118078737806.

It is an arithmetic number, because the mean of its divisors is an integer number (80411619519726).

Almost surely, 2^{321410320604651} is an apocalyptic number.

321410320604651 is a deficient number, since it is larger than the sum of its proper divisors (236157474253).

321410320604651 is a wasteful number, since it uses less digits than its factorization.

321410320604651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236157474252.

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 321410320604651 its reverse (156406023014123), we get a palindrome (477816343618774).

The spelling of 321410320604651 in words is "three hundred twenty-one trillion, four hundred ten billion, three hundred twenty million, six hundred four thousand, six hundred fifty-one".