648116844980 has 72 divisors (see below), whose sum is σ = 1552139324064. Its totient is φ = 225431905600.

The previous prime is 648116844979. The next prime is 648116844983. The reversal of 648116844980 is 89448611846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648116844983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2668106 + ... + 2900865.

It is an arithmetic number, because the mean of its divisors is an integer number (21557490612).

Almost surely, 2^648116844980 is an apocalyptic number.

It is an amenable number.

648116844980 is an abundant number, since it is smaller than the sum of its proper divisors (904022479084).

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

648116844980 is a wasteful number, since it uses less digits than its factorization.

648116844980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569037 (or 5569012 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 59.

The spelling of 648116844980 in words is "six hundred forty-eight billion, one hundred sixteen million, eight hundred forty-four thousand, nine hundred eighty".