870641175786857 has 2 divisors, whose sum is σ = 870641175786858. Its totient is φ = 870641175786856.

The previous prime is 870641175786817. The next prime is 870641175786911. The reversal of 870641175786857 is 758687571146078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 820273142248921 + 50368033537936 = 28640411^2 + 7097044^2 .

It is a cyclic number.

It is not a de Polignac number, because 870641175786857 - 2¹⁴ = 870641175770473 is a prime.

It is a super-3 number, since 3×870641175786857³ (a number of 46 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (870641175786817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435320587893428 + 435320587893429.

It is an arithmetic number, because the mean of its divisors is an integer number (435320587893429).

Almost surely, 2^{870641175786857} is an apocalyptic number.

It is an amenable number.

870641175786857 is a deficient number, since it is larger than the sum of its proper divisors (1).

870641175786857 is an equidigital number, since it uses as much as digits as its factorization.

870641175786857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4425523200, while the sum is 80.

The spelling of 870641175786857 in words is "eight hundred seventy trillion, six hundred forty-one billion, one hundred seventy-five million, seven hundred eighty-six thousand, eight hundred fifty-seven".