64480188321 has 16 divisors (see below), whose sum is σ = 95539773120. Its totient is φ = 42980686560.

The previous prime is 64480188293. The next prime is 64480188343. The reversal of 64480188321 is 12388108446.

64480188321 is a `hidden beast` number, since 6 + 448 + 0 + 188 + 3 + 21 = 666.

It is not a de Polignac number, because 64480188321 - 2⁶ = 64480188257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64480188221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28206 + ... + 360216.

It is an arithmetic number, because the mean of its divisors is an integer number (5971235820).

Almost surely, 2^64480188321 is an apocalyptic number.

It is an amenable number.

64480188321 is a deficient number, since it is larger than the sum of its proper divisors (31059584799).

64480188321 is a wasteful number, since it uses less digits than its factorization.

64480188321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339213 (or 339207 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The spelling of 64480188321 in words is "sixty-four billion, four hundred eighty million, one hundred eighty-eight thousand, three hundred twenty-one".