2128008518544 has 20 divisors (see below), whose sum is σ = 5497355339696. Its totient is φ = 709336172832.

The previous prime is 2128008518539. The next prime is 2128008518551. The reversal of 2128008518544 is 4458158008212.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 44333510803 = 2128008518544 / (2 + 1 + 2 + 8 + 0 + 0 + 8 + 5 + 1 + 8 + 5 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 2128008518493 and 2128008518502.

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 3 ways as a sum of consecutive naturals, for example, 22166755354 + ... + 22166755449.

Almost surely, 2^{2128008518544} is an apocalyptic number.

2128008518544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2128008518544 is an abundant number, since it is smaller than the sum of its proper divisors (3369346821152).

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

2128008518544 is a wasteful number, since it uses less digits than its factorization.

2128008518544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44333510814 (or 44333510808 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 48.

The spelling of 2128008518544 in words is "two trillion, one hundred twenty-eight billion, eight million, five hundred eighteen thousand, five hundred forty-four".