807856675861 has 16 divisors (see below), whose sum is σ = 861513649920. Its totient is φ = 754886995200.

The previous prime is 807856675799. The next prime is 807856675867. The reversal of 807856675861 is 168576658708.

It is a cyclic number.

It is not a de Polignac number, because 807856675861 - 2¹⁹ = 807856151573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (807856675867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4656055 + ... + 4826443.

It is an arithmetic number, because the mean of its divisors is an integer number (53844603120).

Almost surely, 2^807856675861 is an apocalyptic number.

It is an amenable number.

807856675861 is a deficient number, since it is larger than the sum of its proper divisors (53656974059).

807856675861 is a wasteful number, since it uses less digits than its factorization.

807856675861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172404.

The product of its (nonzero) digits is 135475200, while the sum is 67.

The spelling of 807856675861 in words is "eight hundred seven billion, eight hundred fifty-six million, six hundred seventy-five thousand, eight hundred sixty-one".