64020844344924 has 18 divisors (see below), whose sum is σ = 161830467649760. Its totient is φ = 21340281448296.

The previous prime is 64020844344907. The next prime is 64020844344929. The reversal of 64020844344924 is 42944344802046.

64020844344924 is a `hidden beast` number, since 6 + 4 + 0 + 208 + 4 + 4 + 344 + 92 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64020844344929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 889178393644 + ... + 889178393715.

Almost surely, 2^{64020844344924} is an apocalyptic number.

It is an amenable number.

64020844344924 is an abundant number, since it is smaller than the sum of its proper divisors (97809623304836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64020844344924 is a wasteful number, since it uses less digits than its factorization.

64020844344924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778356787369 (or 1778356787364 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 54.

The spelling of 64020844344924 in words is "sixty-four trillion, twenty billion, eight hundred forty-four million, three hundred forty-four thousand, nine hundred twenty-four".