64315672346617 has 4 divisors (see below), whose sum is σ = 64582542356596. Its totient is φ = 64048802336640.

The previous prime is 64315672346591. The next prime is 64315672346659. The reversal of 64315672346617 is 71664327651346.

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 46554134117481 + 17761538229136 = 6823059^2 + 4214444^2 .

It is a cyclic number.

It is not a de Polignac number, because 64315672346617 - 2³¹ = 64313524862969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64315672346677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133435004628 + ... + 133435005109.

It is an arithmetic number, because the mean of its divisors is an integer number (16145635589149).

Almost surely, 2^{64315672346617} is an apocalyptic number.

It is an amenable number.

64315672346617 is a deficient number, since it is larger than the sum of its proper divisors (266870009979).

64315672346617 is a wasteful number, since it uses less digits than its factorization.

64315672346617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266870009978.

The product of its digits is 91445760, while the sum is 61.

The spelling of 64315672346617 in words is "sixty-four trillion, three hundred fifteen billion, six hundred seventy-two million, three hundred forty-six thousand, six hundred seventeen".