64043336423 has 8 divisors (see below), whose sum is σ = 73542587520. Its totient is φ = 55156940280.

The previous prime is 64043336407. The next prime is 64043336443. The reversal of 64043336423 is 32463334046.

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 64043336423 - 2⁴ = 64043336407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64043336443) 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, 153213515 + ... + 153213932.

It is an arithmetic number, because the mean of its divisors is an integer number (9192823440).

Almost surely, 2^64043336423 is an apocalyptic number.

64043336423 is a deficient number, since it is larger than the sum of its proper divisors (9499251097).

64043336423 is a wasteful number, since it uses less digits than its factorization.

64043336423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306427477.

The product of its (nonzero) digits is 373248, while the sum is 38.

The spelling of 64043336423 in words is "sixty-four billion, forty-three million, three hundred thirty-six thousand, four hundred twenty-three".