659643580441 has 8 divisors (see below), whose sum is σ = 660114277704. Its totient is φ = 659173025280.

The previous prime is 659643580357. The next prime is 659643580499. The reversal of 659643580441 is 144085346956.

It can be written as a sum of positive squares in 4 ways, for example, as 159364632025 + 500278948416 = 399205^2 + 707304^2 .

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 659643580441 - 2⁷ = 659643580313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659643587441) 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, 10300681 + ... + 10364521.

It is an arithmetic number, because the mean of its divisors is an integer number (82514284713).

Almost surely, 2^659643580441 is an apocalyptic number.

It is an amenable number.

659643580441 is a deficient number, since it is larger than the sum of its proper divisors (470697263).

659643580441 is a wasteful number, since it uses less digits than its factorization.

659643580441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71051.

The product of its (nonzero) digits is 12441600, while the sum is 55.

The spelling of 659643580441 in words is "six hundred fifty-nine billion, six hundred forty-three million, five hundred eighty thousand, four hundred forty-one".