8169793839785 has 8 divisors (see below), whose sum is σ = 10042868525256. Its totient is φ = 6376424460160.

The previous prime is 8169793839761. The next prime is 8169793839833. The reversal of 8169793839785 is 5879383979618.

It can be written as a sum of positive squares in 4 ways, for example, as 1285157787904 + 6884636051881 = 1133648^2 + 2623859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8169793839785 - 2¹² = 8169793835689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19926326234 + ... + 19926326643.

It is an arithmetic number, because the mean of its divisors is an integer number (1255358565657).

Almost surely, 2^{8169793839785} is an apocalyptic number.

It is an amenable number.

8169793839785 is a deficient number, since it is larger than the sum of its proper divisors (1873074685471).

8169793839785 is a wasteful number, since it uses less digits than its factorization.

8169793839785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39852652923.

The product of its digits is 4938071040, while the sum is 83.

The spelling of 8169793839785 in words is "eight trillion, one hundred sixty-nine billion, seven hundred ninety-three million, eight hundred thirty-nine thousand, seven hundred eighty-five".