2648389855440 has 480 divisors, whose sum is σ = 10120669200000. Its totient is φ = 569629863936.

The previous prime is 2648389855439. The next prime is 2648389855457. The reversal of 2648389855440 is 445589838462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 33252786 + ... + 33332334.

It is an arithmetic number, because the mean of its divisors is an integer number (21084727500).

Almost surely, 2^{2648389855440} is an apocalyptic number.

2648389855440 is a gapful number since it is divisible by the number (20) 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 2648389855440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5060334600000).

2648389855440 is an abundant number, since it is smaller than the sum of its proper divisors (7472279344560).

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

2648389855440 is a wasteful number, since it uses less digits than its factorization.

2648389855440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79747 (or 79734 counting only the distinct ones).

The product of its (nonzero) digits is 265420800, while the sum is 66.

The spelling of 2648389855440 in words is "two trillion, six hundred forty-eight billion, three hundred eighty-nine million, eight hundred fifty-five thousand, four hundred forty".