871104784254642 has 72 divisors (see below), whose sum is σ = 2195552621809872. Its totient is φ = 248885606113200.

The previous prime is 871104784254611. The next prime is 871104784254739. The reversal of 871104784254642 is 246452487401178.

871104784254642 is a `hidden beast` number, since 8 + 7 + 1 + 1 + 0 + 4 + 7 + 8 + 42 + 546 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 871104784254642.

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 35 ways as a sum of consecutive naturals, for example, 150532017 + ... + 156211707.

It is an arithmetic number, because the mean of its divisors is an integer number (30493786414026).

Almost surely, 2^{871104784254642} is an apocalyptic number.

871104784254642 is an abundant number, since it is smaller than the sum of its proper divisors (1324447837555230).

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

871104784254642 is a wasteful number, since it uses less digits than its factorization.

871104784254642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5853604 (or 5853594 counting only the distinct ones).

The product of its (nonzero) digits is 96337920, while the sum is 63.

The spelling of 871104784254642 in words is "eight hundred seventy-one trillion, one hundred four billion, seven hundred eighty-four million, two hundred fifty-four thousand, six hundred forty-two".