64443435445 has 8 divisors (see below), whose sum is σ = 77795190144. Its totient is φ = 51246036624.

The previous prime is 64443435443. The next prime is 64443435461. The reversal of 64443435445 is 54453434446.

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 64443435445 - 2¹ = 64443435443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64443435395 and 64443435404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64443435443) 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, 38588049 + ... + 38589718.

It is an arithmetic number, because the mean of its divisors is an integer number (9724398768).

Almost surely, 2^64443435445 is an apocalyptic number.

It is an amenable number.

64443435445 is a deficient number, since it is larger than the sum of its proper divisors (13351754699).

64443435445 is a wasteful number, since it uses less digits than its factorization.

64443435445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77177939.

The product of its digits is 5529600, while the sum is 46.

Subtracting from 64443435445 its reverse (54453434446), we obtain a palindrome (9990000999).

The spelling of 64443435445 in words is "sixty-four billion, four hundred forty-three million, four hundred thirty-five thousand, four hundred forty-five".