20071706688 has 168 divisors, whose sum is σ = 65087174880. Its totient is φ = 6082283520.

The previous prime is 20071706687. The next prime is 20071706701. The reversal of 20071706688 is 88660717002.

It is not an unprimeable number, because it can be changed into a prime (20071706687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112408 + ... + 229736.

It is an arithmetic number, because the mean of its divisors is an integer number (387423660).

Almost surely, 2^20071706688 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 20071706688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32543587440).

20071706688 is an abundant number, since it is smaller than the sum of its proper divisors (45015468192).

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

20071706688 is a wasteful number, since it uses less digits than its factorization.

20071706688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117367 (or 117345 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 20071706688 in words is "twenty billion, seventy-one million, seven hundred six thousand, six hundred eighty-eight".