871124621605787 has 2 divisors, whose sum is σ = 871124621605788. Its totient is φ = 871124621605786.

The previous prime is 871124621605751. The next prime is 871124621605793. The reversal of 871124621605787 is 787506126421178.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 871124621605787 - 2⁶ = 871124621605723 is a prime.

It is not a weakly prime, because it can be changed into another prime (871124621605717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435562310802893 + 435562310802894.

It is an arithmetic number, because the mean of its divisors is an integer number (435562310802894).

Almost surely, 2^{871124621605787} is an apocalyptic number.

871124621605787 is a deficient number, since it is larger than the sum of its proper divisors (1).

871124621605787 is an equidigital number, since it uses as much as digits as its factorization.

871124621605787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63221760, while the sum is 65.

The spelling of 871124621605787 in words is "eight hundred seventy-one trillion, one hundred twenty-four billion, six hundred twenty-one million, six hundred five thousand, seven hundred eighty-seven".