321405054321 has 64 divisors (see below), whose sum is σ = 486048245760. Its totient is φ = 187619604480.

The previous prime is 321405054319. The next prime is 321405054323. The reversal of 321405054321 is 123450504123.

It is an interprime number because it is at equal distance from previous prime (321405054319) and next prime (321405054323).

It is not a de Polignac number, because 321405054321 - 2¹ = 321405054319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321405054323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7957345 + ... + 7997633.

It is an arithmetic number, because the mean of its divisors is an integer number (7594503840).

Almost surely, 2^321405054321 is an apocalyptic number.

It is an amenable number.

321405054321 is a deficient number, since it is larger than the sum of its proper divisors (164643191439).

321405054321 is a wasteful number, since it uses less digits than its factorization.

321405054321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40486.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 321405054321 its reverse (123450504123), we get a palindrome (444855558444).

The spelling of 321405054321 in words is "three hundred twenty-one billion, four hundred five million, fifty-four thousand, three hundred twenty-one".