64044620063005 has 4 divisors (see below), whose sum is σ = 76853544075612. Its totient is φ = 51235696050400.

The previous prime is 64044620063003. The next prime is 64044620063033. The reversal of 64044620063005 is 50036002644046.

64044620063005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22124407988281 + 41920212074724 = 4703659^2 + 6474582^2 .

It is not a de Polignac number, because 64044620063005 - 2¹ = 64044620063003 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 (64044620063003) 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 3 ways as a sum of consecutive naturals, for example, 6404462006296 + ... + 6404462006305.

It is an arithmetic number, because the mean of its divisors is an integer number (19213386018903).

Almost surely, 2^{64044620063005} is an apocalyptic number.

It is an amenable number.

64044620063005 is a deficient number, since it is larger than the sum of its proper divisors (12808924012607).

64044620063005 is a wasteful number, since it uses less digits than its factorization.

64044620063005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12808924012606.

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 64044620063005 in words is "sixty-four trillion, forty-four billion, six hundred twenty million, sixty-three thousand, five".