64444716847445 has 16 divisors (see below), whose sum is σ = 86644100884608. Its totient is φ = 45602158357440.

The previous prime is 64444716847409. The next prime is 64444716847447. The reversal of 64444716847445 is 54474861744446.

64444716847445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64444716847445 - 2²⁸ = 64444448411989 is a prime.

It is a super-2 number, since 2×64444716847445² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15834080729 + ... + 15834084798.

It is an arithmetic number, because the mean of its divisors is an integer number (5415256305288).

Almost surely, 2^{64444716847445} is an apocalyptic number.

It is an amenable number.

64444716847445 is a deficient number, since it is larger than the sum of its proper divisors (22199384037163).

64444716847445 is a wasteful number, since it uses less digits than its factorization.

64444716847445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31668165580.

The product of its digits is 1156055040, while the sum is 68.

The spelling of 64444716847445 in words is "sixty-four trillion, four hundred forty-four billion, seven hundred sixteen million, eight hundred forty-seven thousand, four hundred forty-five".