820068818875 has 16 divisors (see below), whose sum is σ = 1023921580032. Its totient is φ = 655750123200.

The previous prime is 820068818873. The next prime is 820068818893. The reversal of 820068818875 is 578818860028.

It is not a de Polignac number, because 820068818875 - 2¹ = 820068818873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (820068818873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1254459 + ... + 1792708.

It is an arithmetic number, because the mean of its divisors is an integer number (63995098752).

Almost surely, 2^820068818875 is an apocalyptic number.

820068818875 is a deficient number, since it is larger than the sum of its proper divisors (203852761157).

820068818875 is a wasteful number, since it uses less digits than its factorization.

820068818875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049335 (or 3049325 counting only the distinct ones).

The product of its (nonzero) digits is 13762560, while the sum is 61.

The spelling of 820068818875 in words is "eight hundred twenty billion, sixty-eight million, eight hundred eighteen thousand, eight hundred seventy-five".