64385397415 has 8 divisors (see below), whose sum is σ = 80621715168. Its totient is φ = 49268825760.

The previous prime is 64385397403. The next prime is 64385397437. The reversal of 64385397415 is 51479358346.

It is a happy number.

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

It is not a de Polignac number, because 64385397415 - 2⁹ = 64385396903 is a prime.

It is a Duffinian number.

It is a congruent 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, 279936396 + ... + 279936625.

It is an arithmetic number, because the mean of its divisors is an integer number (10077714396).

Almost surely, 2^64385397415 is an apocalyptic number.

64385397415 is a deficient number, since it is larger than the sum of its proper divisors (16236317753).

64385397415 is a wasteful number, since it uses less digits than its factorization.

64385397415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559873049.

The product of its digits is 10886400, while the sum is 55.

The spelling of 64385397415 in words is "sixty-four billion, three hundred eighty-five million, three hundred ninety-seven thousand, four hundred fifteen".