20117514726571 has 8 divisors (see below), whose sum is σ = 20313138010880. Its totient is φ = 19921897357992.

The previous prime is 20117514726509. The next prime is 20117514726599. The reversal of 20117514726571 is 17562741571102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20117514726571 - 2²³ = 20117506337963 is a prime.

It is a super-3 number, since 3×20117514726571³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20117514726371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5515546 + ... + 8405728.

It is an arithmetic number, because the mean of its divisors is an integer number (2539142251360).

Almost surely, 2^{20117514726571} is an apocalyptic number.

20117514726571 is a deficient number, since it is larger than the sum of its proper divisors (195623284309).

20117514726571 is a wasteful number, since it uses less digits than its factorization.

20117514726571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957865.

The product of its (nonzero) digits is 823200, while the sum is 49.

The spelling of 20117514726571 in words is "twenty trillion, one hundred seventeen billion, five hundred fourteen million, seven hundred twenty-six thousand, five hundred seventy-one".