20186703368 has 64 divisors (see below), whose sum is σ = 43349712000. Its totient is φ = 8735496192.

The previous prime is 20186703307. The next prime is 20186703377. The reversal of 20186703368 is 86330768102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139013 + ... + 244331.

It is an arithmetic number, because the mean of its divisors is an integer number (677339250).

Almost surely, 2^20186703368 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 20186703368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21674856000).

20186703368 is an abundant number, since it is smaller than the sum of its proper divisors (23163008632).

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

20186703368 is a wasteful number, since it uses less digits than its factorization.

20186703368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105454 (or 105450 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 20186703368 in words is "twenty billion, one hundred eighty-six million, seven hundred three thousand, three hundred sixty-eight".