64042244223989 has 16 divisors (see below), whose sum is σ = 68026904248320. Its totient is φ = 60165721627440.

The previous prime is 64042244223983. The next prime is 64042244224037. The reversal of 64042244223989 is 98932244224046.

It is a cyclic number.

It is not a de Polignac number, because 64042244223989 - 2²⁰ = 64042243175413 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 (64042244223983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91920347 + ... + 92614440.

It is an arithmetic number, because the mean of its divisors is an integer number (4251681515520).

Almost surely, 2^{64042244223989} is an apocalyptic number.

It is an amenable number.

64042244223989 is a deficient number, since it is larger than the sum of its proper divisors (3984660024331).

64042244223989 is a wasteful number, since it uses less digits than its factorization.

64042244223989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184535080.

The product of its (nonzero) digits is 47775744, while the sum is 59.

The spelling of 64042244223989 in words is "sixty-four trillion, forty-two billion, two hundred forty-four million, two hundred twenty-three thousand, nine hundred eighty-nine".