20788888884 has 24 divisors (see below), whose sum is σ = 48936679680. Its totient is φ = 6868305024.

The previous prime is 20788888871. The next prime is 20788888921. The reversal of 20788888884 is 48888888702.

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 7 ways as a sum of consecutive naturals, for example, 7664164 + ... + 7666875.

It is an arithmetic number, because the mean of its divisors is an integer number (2039028320).

Almost surely, 2^20788888884 is an apocalyptic number.

It is an amenable number.

20788888884 is an abundant number, since it is smaller than the sum of its proper divisors (28147790796).

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

20788888884 is a wasteful number, since it uses less digits than its factorization.

20788888884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15331159 (or 15331157 counting only the distinct ones).

The product of its (nonzero) digits is 117440512, while the sum is 69.

The spelling of 20788888884 in words is "twenty billion, seven hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-four".