20117502726719 has 4 divisors (see below), whose sum is σ = 20324899662144. Its totient is φ = 19910105791296.

The previous prime is 20117502726689. The next prime is 20117502726743. The reversal of 20117502726719 is 91762720571102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20117502726719 - 2⁸ = 20117502726463 is a prime.

It is a super-2 number, since 2×20117502726719² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20117502726779) 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, 103698467567 + ... + 103698467760.

It is an arithmetic number, because the mean of its divisors is an integer number (5081224915536).

Almost surely, 2^{20117502726719} is an apocalyptic number.

20117502726719 is a deficient number, since it is larger than the sum of its proper divisors (207396935425).

20117502726719 is an equidigital number, since it uses as much as digits as its factorization.

20117502726719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207396935424.

The product of its (nonzero) digits is 740880, while the sum is 50.

The spelling of 20117502726719 in words is "twenty trillion, one hundred seventeen billion, five hundred two million, seven hundred twenty-six thousand, seven hundred nineteen".