20002201984 has 64 divisors (see below), whose sum is σ = 40824463680. Its totient is φ = 9756633600.

The previous prime is 20002201963. The next prime is 20002202021. The reversal of 20002201984 is 48910220002.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6003199 + ... + 6006529.

It is an arithmetic number, because the mean of its divisors is an integer number (637882245).

Almost surely, 2^20002201984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20002201984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20412231840).

20002201984 is an abundant number, since it is smaller than the sum of its proper divisors (20822261696).

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

20002201984 is a wasteful number, since it uses less digits than its factorization.

20002201984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4479 (or 4467 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 20002201984 its reverse (48910220002), we get a palindrome (68912421986).

The spelling of 20002201984 in words is "twenty billion, two million, two hundred one thousand, nine hundred eighty-four".