20608044440 has 16 divisors (see below), whose sum is σ = 46368100080. Its totient is φ = 8243217760.

The previous prime is 20608044383. The next prime is 20608044469. The reversal of 20608044440 is 4444080602.

It is a junction number, because it is equal to n+sod(n) for n = 20608044397 and 20608044406.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 257600516 + ... + 257600595.

It is an arithmetic number, because the mean of its divisors is an integer number (2898006255).

Almost surely, 2^20608044440 is an apocalyptic number.

20608044440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20608044440 is an abundant number, since it is smaller than the sum of its proper divisors (25760055640).

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

20608044440 is a wasteful number, since it uses less digits than its factorization.

20608044440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515201122 (or 515201118 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The spelling of 20608044440 in words is "twenty billion, six hundred eight million, forty-four thousand, four hundred forty".