64684417440305 has 8 divisors (see below), whose sum is σ = 83592170230632. Its totient is φ = 47766954417408.

The previous prime is 64684417440239. The next prime is 64684417440343. The reversal of 64684417440305 is 50304471448646.

64684417440305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 180244400704 + 64504173039601 = 424552^2 + 8031449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64684417440305 - 2²⁶ = 64684350331441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 497572441784 + ... + 497572441913.

It is an arithmetic number, because the mean of its divisors is an integer number (10449021278829).

Almost surely, 2^{64684417440305} is an apocalyptic number.

64684417440305 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64684417440305 is a deficient number, since it is larger than the sum of its proper divisors (18907752790327).

64684417440305 is a wasteful number, since it uses less digits than its factorization.

64684417440305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995144883715.

The product of its (nonzero) digits is 30965760, while the sum is 56.

The spelling of 64684417440305 in words is "sixty-four trillion, six hundred eighty-four billion, four hundred seventeen million, four hundred forty thousand, three hundred five".