64321120210 has 16 divisors (see below), whose sum is σ = 118601871192. Its totient is φ = 25100924800.

The previous prime is 64321120187. The next prime is 64321120217. The reversal of 64321120210 is 1202112346.

It can be written as a sum of positive squares in 4 ways, for example, as 12395927569 + 51925192641 = 111337^2 + 227871^2 .

It is not an unprimeable number, because it can be changed into a prime (64321120217) 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 7 ways as a sum of consecutive naturals, for example, 78439981 + ... + 78440800.

Almost surely, 2^64321120210 is an apocalyptic number.

64321120210 is a deficient number, since it is larger than the sum of its proper divisors (54280750982).

64321120210 is a wasteful number, since it uses less digits than its factorization.

64321120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156880829.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 64321120210 its reverse (1202112346), we get a palindrome (65523232556).

The spelling of 64321120210 in words is "sixty-four billion, three hundred twenty-one million, one hundred twenty thousand, two hundred ten".