64043544043 has 8 divisors (see below), whose sum is σ = 64681416800. Its totient is φ = 63405980928.

The previous prime is 64043544031. The next prime is 64043544053. The reversal of 64043544043 is 34044534046.

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-64043544043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64043543993 and 64043544011.

It is not an unprimeable number, because it can be changed into a prime (64043544053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349993 + ... + 500581.

It is an arithmetic number, because the mean of its divisors is an integer number (8085177100).

Almost surely, 2^64043544043 is an apocalyptic number.

64043544043 is a deficient number, since it is larger than the sum of its proper divisors (637872757).

64043544043 is a wasteful number, since it uses less digits than its factorization.

64043544043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154821.

The product of its (nonzero) digits is 276480, while the sum is 37.

The spelling of 64043544043 in words is "sixty-four billion, forty-three million, five hundred forty-four thousand, forty-three".