768531135847 has 2 divisors, whose sum is σ = 768531135848. Its totient is φ = 768531135846.

The previous prime is 768531135839. The next prime is 768531135851. The reversal of 768531135847 is 748531135867.

It is a strong prime.

It is an emirp because it is prime and its reverse (748531135867) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 768531135847 - 2³ = 768531135839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 768531135791 and 768531135800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768531135887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384265567923 + 384265567924.

It is an arithmetic number, because the mean of its divisors is an integer number (384265567924).

Almost surely, 2^768531135847 is an apocalyptic number.

768531135847 is a deficient number, since it is larger than the sum of its proper divisors (1).

768531135847 is an equidigital number, since it uses as much as digits as its factorization.

768531135847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16934400, while the sum is 58.

The spelling of 768531135847 in words is "seven hundred sixty-eight billion, five hundred thirty-one million, one hundred thirty-five thousand, eight hundred forty-seven".