20017566713740 has 12 divisors (see below), whose sum is σ = 42036890098896. Its totient is φ = 8007026685488.

The previous prime is 20017566713737. The next prime is 20017566713747. The reversal of 20017566713740 is 4731766571002.

It is not an unprimeable number, because it can be changed into a prime (20017566713747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500439167824 + ... + 500439167863.

It is an arithmetic number, because the mean of its divisors is an integer number (3503074174908).

Almost surely, 2^{20017566713740} is an apocalyptic number.

20017566713740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20017566713740 is an abundant number, since it is smaller than the sum of its proper divisors (22019323385156).

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

20017566713740 is a wasteful number, since it uses less digits than its factorization.

20017566713740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000878335696 (or 1000878335694 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 20017566713740 in words is "twenty trillion, seventeen billion, five hundred sixty-six million, seven hundred thirteen thousand, seven hundred forty".