871704120745757 has 16 divisors (see below), whose sum is σ = 979579414490880. Its totient is φ = 769660813734912.

The previous prime is 871704120745741. The next prime is 871704120745937. The reversal of 871704120745757 is 757547021407178.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 871704120745757 - 2⁴ = 871704120745741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 871704120745693 and 871704120745702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871704120745957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45145469 + ... + 61494077.

It is an arithmetic number, because the mean of its divisors is an integer number (61223713405680).

Almost surely, 2^{871704120745757} is an apocalyptic number.

It is an amenable number.

871704120745757 is a deficient number, since it is larger than the sum of its proper divisors (107875293745123).

871704120745757 is a wasteful number, since it uses less digits than its factorization.

871704120745757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16526972.

The product of its (nonzero) digits is 107564800, while the sum is 65.

The spelling of 871704120745757 in words is "eight hundred seventy-one trillion, seven hundred four billion, one hundred twenty million, seven hundred forty-five thousand, seven hundred fifty-seven".