20117102520760 has 128 divisors (see below), whose sum is σ = 51881646960000. Its totient is φ = 6877053517824.

The previous prime is 20117102520743. The next prime is 20117102520761. The reversal of 20117102520760 is 6702520171102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20117102520761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179597892 + ... + 179709868.

It is an arithmetic number, because the mean of its divisors is an integer number (405325366875).

Almost surely, 2^{20117102520760} is an apocalyptic number.

20117102520760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20117102520760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25940823480000).

20117102520760 is an abundant number, since it is smaller than the sum of its proper divisors (31764544439240).

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

20117102520760 is a wasteful number, since it uses less digits than its factorization.

20117102520760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113873 (or 113869 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 34.

Adding to 20117102520760 its reverse (6702520171102), we get a palindrome (26819622691862).

The spelling of 20117102520760 in words is "twenty trillion, one hundred seventeen billion, one hundred two million, five hundred twenty thousand, seven hundred sixty".