20868348032 has 128 divisors (see below), whose sum is σ = 49263552000. Its totient is φ = 8615448576.

The previous prime is 20868348029. The next prime is 20868348041. The reversal of 20868348032 is 23084386802.

It is a tau number, because it is divible by the number of its divisors (128).

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 15 ways as a sum of consecutive naturals, for example, 18681938 + ... + 18683054.

It is an arithmetic number, because the mean of its divisors is an integer number (384871500).

Almost surely, 2^20868348032 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 20868348032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24631776000).

20868348032 is an abundant number, since it is smaller than the sum of its proper divisors (28395203968).

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

20868348032 is a wasteful number, since it uses less digits than its factorization.

20868348032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886 (or 1874 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 44.

The spelling of 20868348032 in words is "twenty billion, eight hundred sixty-eight million, three hundred forty-eight thousand, thirty-two".