16471872317 has 2 divisors, whose sum is σ = 16471872318. Its totient is φ = 16471872316.

The previous prime is 16471872281. The next prime is 16471872341. The reversal of 16471872317 is 71327817461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8907395641 + 7564476676 = 94379^2 + 86974^2 .

It is a cyclic number.

It is not a de Polignac number, because 16471872317 - 2¹² = 16471868221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16471872397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8235936158 + 8235936159.

It is an arithmetic number, because the mean of its divisors is an integer number (8235936159).

Almost surely, 2^16471872317 is an apocalyptic number.

It is an amenable number.

16471872317 is a deficient number, since it is larger than the sum of its proper divisors (1).

16471872317 is an equidigital number, since it uses as much as digits as its factorization.

16471872317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 47.

The spelling of 16471872317 in words is "sixteen billion, four hundred seventy-one million, eight hundred seventy-two thousand, three hundred seventeen".