64806385369 has 8 divisors (see below), whose sum is σ = 71001302112. Its totient is φ = 58662039840.

The previous prime is 64806385339. The next prime is 64806385379. The reversal of 64806385369 is 96358360846.

It is a happy number.

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 64806385369 - 2¹³ = 64806377177 is a prime.

It is a super-2 number, since 2×64806385369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64806385339) 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, 12640119 + ... + 12645244.

It is an arithmetic number, because the mean of its divisors is an integer number (8875162764).

Almost surely, 2^64806385369 is an apocalyptic number.

It is an amenable number.

64806385369 is a deficient number, since it is larger than the sum of its proper divisors (6194916743).

64806385369 is a wasteful number, since it uses less digits than its factorization.

64806385369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25285607.

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 64806385369 in words is "sixty-four billion, eight hundred six million, three hundred eighty-five thousand, three hundred sixty-nine".