20117700124770 has 16 divisors (see below), whose sum is σ = 48282480299520. Its totient is φ = 5364720033264.

The previous prime is 20117700124763. The next prime is 20117700124793. The reversal of 20117700124770 is 7742100771102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335295002050 + ... + 335295002109.

It is an arithmetic number, because the mean of its divisors is an integer number (3017655018720).

Almost surely, 2^{20117700124770} is an apocalyptic number.

20117700124770 is an abundant number, since it is smaller than the sum of its proper divisors (28164780174750).

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

20117700124770 is a wasteful number, since it uses less digits than its factorization.

20117700124770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670590004169.

The product of its (nonzero) digits is 38416, while the sum is 39.

Adding to 20117700124770 its reverse (7742100771102), we get a palindrome (27859800895872).

The spelling of 20117700124770 in words is "twenty trillion, one hundred seventeen billion, seven hundred million, one hundred twenty-four thousand, seven hundred seventy".