871091422344 has 384 divisors, whose sum is σ = 2873760153600. Its totient is φ = 242853811200.

The previous prime is 871091422339. The next prime is 871091422349. The reversal of 871091422344 is 443224190178.

871091422344 is a `hidden beast` number, since 87 + 109 + 1 + 422 + 3 + 44 = 666.

It is an interprime number because it is at equal distance from previous prime (871091422339) and next prime (871091422349).

It is a self number, because there is not a number n which added to its sum of digits gives 871091422344.

It is not an unprimeable number, because it can be changed into a prime (871091422349) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 106343289 + ... + 106351479.

It is an arithmetic number, because the mean of its divisors is an integer number (7483750400).

Almost surely, 2^871091422344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 871091422344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436880076800).

871091422344 is an abundant number, since it is smaller than the sum of its proper divisors (2002668731256).

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

871091422344 is a wasteful number, since it uses less digits than its factorization.

871091422344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8554 (or 8533 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

It can be divided in two parts, 87109 and 1422344, that added together give a triangular number (1509453 = T₁₇₃₇).

The spelling of 871091422344 in words is "eight hundred seventy-one billion, ninety-one million, four hundred twenty-two thousand, three hundred forty-four".