871348440244458 has 256 divisors, whose sum is σ = 1995478015795200. Its totient is φ = 251357783040000.

The previous prime is 871348440244393. The next prime is 871348440244463. The reversal of 871348440244458 is 854442044843178.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 54798334308 + ... + 54798350208.

It is an arithmetic number, because the mean of its divisors is an integer number (7794835999200).

Almost surely, 2^{871348440244458} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871348440244458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (997739007897600).

871348440244458 is an abundant number, since it is smaller than the sum of its proper divisors (1124129575550742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871348440244458 is a wasteful number, since it uses less digits than its factorization.

871348440244458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19469.

The product of its (nonzero) digits is 440401920, while the sum is 66.

The spelling of 871348440244458 in words is "eight hundred seventy-one trillion, three hundred forty-eight billion, four hundred forty million, two hundred forty-four thousand, four hundred fifty-eight".