321632160032 has 24 divisors (see below), whose sum is σ = 639482760252. Its totient is φ = 159223840000.

The previous prime is 321632160023. The next prime is 321632160043. The reversal of 321632160032 is 230061236123.

It can be written as a sum of positive squares in 2 ways, for example, as 198484506256 + 123147653776 = 445516^2 + 350924^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321632159977 and 321632160004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49754219 + ... + 49760682.

Almost surely, 2^321632160032 is an apocalyptic number.

321632160032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

321632160032 is a deficient number, since it is larger than the sum of its proper divisors (317850600220).

321632160032 is a wasteful number, since it uses less digits than its factorization.

321632160032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99515012 (or 99515004 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 321632160032 its reverse (230061236123), we get a palindrome (551693396155).

The spelling of 321632160032 in words is "three hundred twenty-one billion, six hundred thirty-two million, one hundred sixty thousand, thirty-two".