878171340241424 has 20 divisors (see below), whose sum is σ = 1703397059512044. Its totient is φ = 438585002302848.

The previous prime is 878171340241417. The next prime is 878171340241453. The reversal of 878171340241424 is 424142043171878.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 588924175417600 + 289247164823824 = 24267760^2 + 17007268^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 878171340241424.

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 3 ways as a sum of consecutive naturals, for example, 31291724147 + ... + 31291752210.

Almost surely, 2^{878171340241424} is an apocalyptic number.

It is an amenable number.

878171340241424 is a deficient number, since it is larger than the sum of its proper divisors (825225719270620).

878171340241424 is a wasteful number, since it uses less digits than its factorization.

878171340241424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62583477242 (or 62583477236 counting only the distinct ones).

The product of its (nonzero) digits is 9633792, while the sum is 56.

The spelling of 878171340241424 in words is "eight hundred seventy-eight trillion, one hundred seventy-one billion, three hundred forty million, two hundred forty-one thousand, four hundred twenty-four".