20188768752 has 80 divisors (see below), whose sum is σ = 58025170080. Its totient is φ = 6720772608.

The previous prime is 20188768703. The next prime is 20188768753. The reversal of 20188768752 is 25786788102.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20188768753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303708 + ... + 364164.

It is an arithmetic number, because the mean of its divisors is an integer number (725314626).

Almost surely, 2^20188768752 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 20188768752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29012585040).

20188768752 is an abundant number, since it is smaller than the sum of its proper divisors (37836401328).

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

20188768752 is a wasteful number, since it uses less digits than its factorization.

20188768752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61247 (or 61235 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 20188768752 in words is "twenty billion, one hundred eighty-eight million, seven hundred sixty-eight thousand, seven hundred fifty-two".