648815518846 has 48 divisors (see below), whose sum is σ = 1104635879424. Its totient is φ = 285302754000.

The previous prime is 648815518843. The next prime is 648815518847.

648815518846 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648815518843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23925331 + ... + 23952433.

It is an arithmetic number, because the mean of its divisors is an integer number (23013247488).

Almost surely, 2^648815518846 is an apocalyptic number.

648815518846 is a deficient number, since it is larger than the sum of its proper divisors (455820360578).

648815518846 is a wasteful number, since it uses less digits than its factorization.

648815518846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30349 (or 30338 counting only the distinct ones).

The product of its digits is 58982400, while the sum is 64.

The spelling of 648815518846 in words is "six hundred forty-eight billion, eight hundred fifteen million, five hundred eighteen thousand, eight hundred forty-six".