321144020466 has 32 divisors (see below), whose sum is σ = 648402910848. Its totient is φ = 106030122240.

The previous prime is 321144020459. The next prime is 321144020479. The reversal of 321144020466 is 664020441123.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 867720 + ... + 1181196.

It is an arithmetic number, because the mean of its divisors is an integer number (20262590964).

Almost surely, 2^321144020466 is an apocalyptic number.

321144020466 is an abundant number, since it is smaller than the sum of its proper divisors (327258890382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321144020466 is a wasteful number, since it uses less digits than its factorization.

321144020466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315106.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 321144020466 its reverse (664020441123), we get a palindrome (985164461589).

The spelling of 321144020466 in words is "three hundred twenty-one billion, one hundred forty-four million, twenty thousand, four hundred sixty-six".