64444716847444 has 24 divisors (see below), whose sum is σ = 113212378939968. Its totient is φ = 32098334358720.

The previous prime is 64444716847409. The next prime is 64444716847447. The reversal of 64444716847444 is 44474861744446.

It is a hoax number, since the sum of its digits (67) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 64444716847444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64444716847447) 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, 21172119 + ... + 24023905.

It is an arithmetic number, because the mean of its divisors is an integer number (4717182455832).

Almost surely, 2^{64444716847444} is an apocalyptic number.

It is an amenable number.

64444716847444 is a deficient number, since it is larger than the sum of its proper divisors (48767662092524).

64444716847444 is a wasteful number, since it uses less digits than its factorization.

64444716847444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873535 (or 2873533 counting only the distinct ones).

The product of its digits is 924844032, while the sum is 67.

The spelling of 64444716847444 in words is "sixty-four trillion, four hundred forty-four billion, seven hundred sixteen million, eight hundred forty-seven thousand, four hundred forty-four".