808381028647 has 2 divisors, whose sum is σ = 808381028648. Its totient is φ = 808381028646.

The previous prime is 808381028597. The next prime is 808381028711. The reversal of 808381028647 is 746820183808.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-808381028647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808381023647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404190514323 + 404190514324.

It is an arithmetic number, because the mean of its divisors is an integer number (404190514324).

Almost surely, 2^808381028647 is an apocalyptic number.

808381028647 is a deficient number, since it is larger than the sum of its proper divisors (1).

808381028647 is an equidigital number, since it uses as much as digits as its factorization.

808381028647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4128768, while the sum is 55.

The spelling of 808381028647 in words is "eight hundred eight billion, three hundred eighty-one million, twenty-eight thousand, six hundred forty-seven".