321664464466123 has 16 divisors (see below), whose sum is σ = 327633080116320. Its totient is φ = 315713166912000.

The previous prime is 321664464465997. The next prime is 321664464466211.

321664464466123 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 321664464466123 - 2⁴¹ = 319465441210571 is a prime.

It is a super-2 number, since 2×321664464466123² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321664464866123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 395068963 + ... + 395882323.

It is an arithmetic number, because the mean of its divisors is an integer number (20477067507270).

Almost surely, 2^{321664464466123} is an apocalyptic number.

321664464466123 is a deficient number, since it is larger than the sum of its proper divisors (5968615650197).

321664464466123 is an equidigital number, since it uses as much as digits as its factorization.

321664464466123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823998.

The product of its digits is 71663616, while the sum is 58.

The spelling of 321664464466123 in words is "three hundred twenty-one trillion, six hundred sixty-four billion, four hundred sixty-four million, four hundred sixty-six thousand, one hundred twenty-three".