648802810812 has 48 divisors (see below), whose sum is σ = 1630793388672. Its totient is φ = 199574281920.

The previous prime is 648802810741. The next prime is 648802810829. The reversal of 648802810812 is 218018208846.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51078 + ... + 1140269.

It is an arithmetic number, because the mean of its divisors is an integer number (33974862264).

Almost surely, 2^648802810812 is an apocalyptic number.

It is an amenable number.

648802810812 is an abundant number, since it is smaller than the sum of its proper divisors (981990577860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648802810812 is a wasteful number, since it uses less digits than its factorization.

648802810812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194858 (or 1194856 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 48.

The spelling of 648802810812 in words is "six hundred forty-eight billion, eight hundred two million, eight hundred ten thousand, eight hundred twelve".