648163820472 has 128 divisors (see below), whose sum is σ = 2016584640000. Its totient is φ = 169393061376.

The previous prime is 648163820419. The next prime is 648163820497. The reversal of 648163820472 is 274028361846.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3408447 + ... + 3593582.

It is an arithmetic number, because the mean of its divisors is an integer number (15754567500).

Almost surely, 2^648163820472 is an apocalyptic number.

It is an amenable number.

648163820472 is an abundant number, since it is smaller than the sum of its proper divisors (1368420819528).

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

648163820472 is a wasteful number, since it uses less digits than its factorization.

648163820472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7002093 (or 7002089 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 51.

The spelling of 648163820472 in words is "six hundred forty-eight billion, one hundred sixty-three million, eight hundred twenty thousand, four hundred seventy-two".