72217271471 has 2 divisors, whose sum is σ = 72217271472. Its totient is φ = 72217271470.

The previous prime is 72217271459. The next prime is 72217271473. The reversal of 72217271471 is 17417271227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72217271471 - 2¹⁸ = 72217009327 is a prime.

It is a super-3 number, since 3×72217271471³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 72217271473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72217271473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36108635735 + 36108635736.

It is an arithmetic number, because the mean of its divisors is an integer number (36108635736).

Almost surely, 2^72217271471 is an apocalyptic number.

72217271471 is a deficient number, since it is larger than the sum of its proper divisors (1).

72217271471 is an equidigital number, since it uses as much as digits as its factorization.

72217271471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76832, while the sum is 41.

The spelling of 72217271471 in words is "seventy-two billion, two hundred seventeen million, two hundred seventy-one thousand, four hundred seventy-one".