814398716471 has 2 divisors, whose sum is σ = 814398716472. Its totient is φ = 814398716470.

The previous prime is 814398716381. The next prime is 814398716519. The reversal of 814398716471 is 174617893418.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-814398716471 is a prime.

It is a super-3 number, since 3×814398716471³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 814398716471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (814398716371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407199358235 + 407199358236.

It is an arithmetic number, because the mean of its divisors is an integer number (407199358236).

Almost surely, 2^814398716471 is an apocalyptic number.

814398716471 is a deficient number, since it is larger than the sum of its proper divisors (1).

814398716471 is an equidigital number, since it uses as much as digits as its factorization.

814398716471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 59.

The spelling of 814398716471 in words is "eight hundred fourteen billion, three hundred ninety-eight million, seven hundred sixteen thousand, four hundred seventy-one".