20002100984 has 16 divisors (see below), whose sum is σ = 38713744320. Its totient is φ = 9678435840.

The previous prime is 20002100981. The next prime is 20002101017. The reversal of 20002100984 is 48900120002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002100981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40326569 + ... + 40327064.

It is an arithmetic number, because the mean of its divisors is an integer number (2419609020).

Almost surely, 2^20002100984 is an apocalyptic number.

It is an amenable number.

20002100984 is a deficient number, since it is larger than the sum of its proper divisors (18711643336).

20002100984 is a wasteful number, since it uses less digits than its factorization.

20002100984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80653670 (or 80653666 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 20002100984 its reverse (48900120002), we get a palindrome (68902220986).

The spelling of 20002100984 in words is "twenty billion, two million, one hundred thousand, nine hundred eighty-four".