64472146321 has 8 divisors (see below), whose sum is σ = 74035000800. Its totient is φ = 55526250240.

The previous prime is 64472146303. The next prime is 64472146373. The reversal of 64472146321 is 12364127446.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64472146321 - 2⁵ = 64472146289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64472146121) 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 7 ways as a sum of consecutive naturals, for example, 154239376 + ... + 154239793.

It is an arithmetic number, because the mean of its divisors is an integer number (9254375100).

Almost surely, 2^64472146321 is an apocalyptic number.

It is an amenable number.

64472146321 is a deficient number, since it is larger than the sum of its proper divisors (9562854479).

64472146321 is a wasteful number, since it uses less digits than its factorization.

64472146321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308479199.

The product of its digits is 193536, while the sum is 40.

The spelling of 64472146321 in words is "sixty-four billion, four hundred seventy-two million, one hundred forty-six thousand, three hundred twenty-one".