20199860736 has 160 divisors (see below), whose sum is σ = 59042649600. Its totient is φ = 6086062080.

The previous prime is 20199860687. The next prime is 20199860749. The reversal of 20199860736 is 63706899102.

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, 3021045 + ... + 3027723.

It is an arithmetic number, because the mean of its divisors is an integer number (369016560).

Almost surely, 2^20199860736 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 20199860736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29521324800).

20199860736 is an abundant number, since it is smaller than the sum of its proper divisors (38842788864).

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

20199860736 is a wasteful number, since it uses less digits than its factorization.

20199860736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890 (or 6874 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 20199860736 in words is "twenty billion, one hundred ninety-nine million, eight hundred sixty thousand, seven hundred thirty-six".