64434063304321 has 8 divisors (see below), whose sum is σ = 64829804418720. Its totient is φ = 64038327557472.

The previous prime is 64434063304307. The next prime is 64434063304327. The reversal of 64434063304321 is 12340336043446.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64434063304321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64434063304327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24232701 + ... + 26759893.

It is an arithmetic number, because the mean of its divisors is an integer number (8103725552340).

Almost surely, 2^{64434063304321} is an apocalyptic number.

It is an amenable number.

64434063304321 is a deficient number, since it is larger than the sum of its proper divisors (395741114399).

64434063304321 is a wasteful number, since it uses less digits than its factorization.

64434063304321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683775.

The product of its (nonzero) digits is 1492992, while the sum is 43.

Adding to 64434063304321 its reverse (12340336043446), we get a palindrome (76774399347767).

The spelling of 64434063304321 in words is "sixty-four trillion, four hundred thirty-four billion, sixty-three million, three hundred four thousand, three hundred twenty-one".