64560345413 has 4 divisors (see below), whose sum is σ = 64576437228. Its totient is φ = 64544253600.

The previous prime is 64560345401. The next prime is 64560345427. The reversal of 64560345413 is 31454306546.

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 23480352289 + 41079993124 = 153233^2 + 202682^2 .

It is a cyclic number.

It is not a de Polignac number, because 64560345413 - 2¹² = 64560341317 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 (64560395413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8039888 + ... + 8047913.

It is an arithmetic number, because the mean of its divisors is an integer number (16144109307).

Almost surely, 2^64560345413 is an apocalyptic number.

It is an amenable number.

64560345413 is a deficient number, since it is larger than the sum of its proper divisors (16091815).

64560345413 is a wasteful number, since it uses less digits than its factorization.

64560345413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16091814.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 64560345413 in words is "sixty-four billion, five hundred sixty million, three hundred forty-five thousand, four hundred thirteen".