871374646455785 has 8 divisors (see below), whose sum is σ = 1059973542538440. Its totient is φ = 687550405970304.

The previous prime is 871374646455763. The next prime is 871374646455811. The reversal of 871374646455785 is 587554646473178.

It can be written as a sum of positive squares in 4 ways, for example, as 99702861057424 + 771671785398361 = 9985132^2 + 27778981^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 871374646455785 - 2¹⁸ = 871374646193641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1193663898890 + ... + 1193663899619.

It is an arithmetic number, because the mean of its divisors is an integer number (132496692817305).

Almost surely, 2^{871374646455785} is an apocalyptic number.

It is an amenable number.

871374646455785 is a deficient number, since it is larger than the sum of its proper divisors (188598896082655).

871374646455785 is a wasteful number, since it uses less digits than its factorization.

871374646455785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387327798587.

The product of its digits is 18966528000, while the sum is 80.

The spelling of 871374646455785 in words is "eight hundred seventy-one trillion, three hundred seventy-four billion, six hundred forty-six million, four hundred fifty-five thousand, seven hundred eighty-five".