20717524471 has 32 divisors (see below), whose sum is σ = 25007800320. Its totient is φ = 16787865600.

The previous prime is 20717524433. The next prime is 20717524537. The reversal of 20717524471 is 17442571702.

It is a cyclic number.

It is not a de Polignac number, because 20717524471 - 2¹³ = 20717516279 is a prime.

It is a super-3 number, since 3×20717524471³ (a number of 32 digits) contains 333 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 (20717524871) 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, 6535975 + ... + 6539143.

It is an arithmetic number, because the mean of its divisors is an integer number (781493760).

Almost surely, 2^20717524471 is an apocalyptic number.

20717524471 is a deficient number, since it is larger than the sum of its proper divisors (4290275849).

20717524471 is a wasteful number, since it uses less digits than its factorization.

20717524471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3895.

The product of its (nonzero) digits is 109760, while the sum is 40.

The spelling of 20717524471 in words is "twenty billion, seven hundred seventeen million, five hundred twenty-four thousand, four hundred seventy-one".