64321321100 has 36 divisors (see below), whose sum is σ = 141543159408. Its totient is φ = 25366152000.

The previous prime is 64321321093. The next prime is 64321321147. The reversal of 64321321100 is 112312346.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4522571 + ... + 4536770.

It is an arithmetic number, because the mean of its divisors is an integer number (3931754428).

Almost surely, 2^64321321100 is an apocalyptic number.

It is an amenable number.

64321321100 is an abundant number, since it is smaller than the sum of its proper divisors (77221838308).

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

64321321100 is a wasteful number, since it uses less digits than its factorization.

64321321100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9059426 (or 9059419 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 64321321100 its reverse (112312346), we get a palindrome (64433633446).

The spelling of 64321321100 in words is "sixty-four billion, three hundred twenty-one million, three hundred twenty-one thousand, one hundred".