869856981701 has 2 divisors, whose sum is σ = 869856981702. Its totient is φ = 869856981700.

The previous prime is 869856981671. The next prime is 869856981703. The reversal of 869856981701 is 107189658968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487965117025 + 381891864676 = 698545^2 + 617974^2 .

It is a cyclic number.

It is not a de Polignac number, because 869856981701 - 2³⁸ = 594979074757 is a prime.

It is a super-2 number, since 2×869856981701² (a number of 25 digits) contains 22 as substring.

Together with 869856981703, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869856981703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434928490850 + 434928490851.

It is an arithmetic number, because the mean of its divisors is an integer number (434928490851).

Almost surely, 2^869856981701 is an apocalyptic number.

It is an amenable number.

869856981701 is a deficient number, since it is larger than the sum of its proper divisors (1).

869856981701 is an equidigital number, since it uses as much as digits as its factorization.

869856981701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52254720, while the sum is 68.

The spelling of 869856981701 in words is "eight hundred sixty-nine billion, eight hundred fifty-six million, nine hundred eighty-one thousand, seven hundred one".