648503546561 has 8 divisors (see below), whose sum is σ = 714630026880. Its totient is φ = 584697293712.

The previous prime is 648503546557. The next prime is 648503546611. The reversal of 648503546561 is 165645305846.

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 648503546561 - 2² = 648503546557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648503546521) 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, 580056281 + ... + 580057398.

It is an arithmetic number, because the mean of its divisors is an integer number (89328753360).

Almost surely, 2^648503546561 is an apocalyptic number.

It is an amenable number.

648503546561 is a deficient number, since it is larger than the sum of its proper divisors (66126480319).

648503546561 is a wasteful number, since it uses less digits than its factorization.

648503546561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160113735.

The product of its (nonzero) digits is 10368000, while the sum is 53.

The spelling of 648503546561 in words is "six hundred forty-eight billion, five hundred three million, five hundred forty-six thousand, five hundred sixty-one".