648813216875 has 10 divisors (see below), whose sum is σ = 810756996588. Its totient is φ = 519050573000.

The previous prime is 648813216859. The next prime is 648813216917. The reversal of 648813216875 is 578612318846.

It is not a de Polignac number, because 648813216875 - 2⁴ = 648813216859 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 519049949 + ... + 519051198.

Almost surely, 2^648813216875 is an apocalyptic number.

648813216875 is a deficient number, since it is larger than the sum of its proper divisors (161943779713).

648813216875 is an equidigital number, since it uses as much as digits as its factorization.

648813216875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038101167 (or 1038101152 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 59.

The spelling of 648813216875 in words is "six hundred forty-eight billion, eight hundred thirteen million, two hundred sixteen thousand, eight hundred seventy-five".