20020444648 has 32 divisors (see below), whose sum is σ = 39348207360. Its totient is φ = 9538945920.

The previous prime is 20020444643. The next prime is 20020444649. The reversal of 20020444648 is 84644402002.

It is not an unprimeable number, because it can be changed into a prime (20020444643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695640 + ... + 723847.

It is an arithmetic number, because the mean of its divisors is an integer number (1229631480).

Almost surely, 2^20020444648 is an apocalyptic number.

It is an amenable number.

20020444648 is a deficient number, since it is larger than the sum of its proper divisors (19327762712).

20020444648 is a wasteful number, since it uses less digits than its factorization.

20020444648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419577 (or 1419573 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 34.

The spelling of 20020444648 in words is "twenty billion, twenty million, four hundred forty-four thousand, six hundred forty-eight".