64536403559 has 4 divisors (see below), whose sum is σ = 64756664616. Its totient is φ = 64316142504.

The previous prime is 64536403531. The next prime is 64536403597. The reversal of 64536403559 is 95530463546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64536403559 - 2¹² = 64536399463 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 (64536403159) 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, 110130089 + ... + 110130674.

It is an arithmetic number, because the mean of its divisors is an integer number (16189166154).

Almost surely, 2^64536403559 is an apocalyptic number.

64536403559 is a deficient number, since it is larger than the sum of its proper divisors (220261057).

64536403559 is a wasteful number, since it uses less digits than its factorization.

64536403559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220261056.

The product of its (nonzero) digits is 5832000, while the sum is 50.

The spelling of 64536403559 in words is "sixty-four billion, five hundred thirty-six million, four hundred three thousand, five hundred fifty-nine".