20180888712 has 144 divisors (see below), whose sum is σ = 57672314700. Its totient is φ = 6374142720.

The previous prime is 20180888669. The next prime is 20180888719. The reversal of 20180888712 is 21788808102.

It can be written as a sum of positive squares in 2 ways, for example, as 17807834916 + 2373053796 = 133446^2 + 48714^2 .

It is a super-3 number, since 3×20180888712³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (20180888719) 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 35 ways as a sum of consecutive naturals, for example, 4149162 + ... + 4154022.

Almost surely, 2^20180888712 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 20180888712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28836157350).

20180888712 is an abundant number, since it is smaller than the sum of its proper divisors (37491425988).

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

20180888712 is a wasteful number, since it uses less digits than its factorization.

20180888712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028 (or 4998 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 45.

The spelling of 20180888712 in words is "twenty billion, one hundred eighty million, eight hundred eighty-eight thousand, seven hundred twelve".