871063682800621 has 2 divisors, whose sum is σ = 871063682800622. Its totient is φ = 871063682800620.

The previous prime is 871063682800471. The next prime is 871063682800639. The reversal of 871063682800621 is 126008286360178.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538906278066025 + 332157404734596 = 23214355^2 + 18225186^2 .

It is a cyclic number.

It is not a de Polignac number, because 871063682800621 - 2¹⁵ = 871063682767853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (871063682803621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435531841400310 + 435531841400311.

It is an arithmetic number, because the mean of its divisors is an integer number (435531841400311).

Almost surely, 2^{871063682800621} is an apocalyptic number.

It is an amenable number.

871063682800621 is a deficient number, since it is larger than the sum of its proper divisors (1).

871063682800621 is an equidigital number, since it uses as much as digits as its factorization.

871063682800621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9289728, while the sum is 58.

The spelling of 871063682800621 in words is "eight hundred seventy-one trillion, sixty-three billion, six hundred eighty-two million, eight hundred thousand, six hundred twenty-one".