648452249760 has 384 divisors, whose sum is σ = 2413468237824. Its totient is φ = 143252582400.

The previous prime is 648452249749. The next prime is 648452249827. The reversal of 648452249760 is 67942254846.

It is a self number, because there is not a number n which added to its sum of digits gives 648452249760.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18755049 + ... + 18789591.

It is an arithmetic number, because the mean of its divisors is an integer number (6285073536).

Almost surely, 2^648452249760 is an apocalyptic number.

648452249760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648452249760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1206734118912).

648452249760 is an abundant number, since it is smaller than the sum of its proper divisors (1765015988064).

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

648452249760 is a wasteful number, since it uses less digits than its factorization.

648452249760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34756 (or 34748 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 57.

The spelling of 648452249760 in words is "six hundred forty-eight billion, four hundred fifty-two million, two hundred forty-nine thousand, seven hundred sixty".