840198858422 has 64 divisors (see below), whose sum is σ = 1604661926400. Its totient is φ = 327081938400.

The previous prime is 840198858391. The next prime is 840198858467. The reversal of 840198858422 is 224858891048.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9289397 + ... + 9379407.

It is an arithmetic number, because the mean of its divisors is an integer number (25072842600).

Almost surely, 2^840198858422 is an apocalyptic number.

840198858422 is a deficient number, since it is larger than the sum of its proper divisors (764463067978).

840198858422 is a wasteful number, since it uses less digits than its factorization.

840198858422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91282 (or 91268 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 59.

The spelling of 840198858422 in words is "eight hundred forty billion, one hundred ninety-eight million, eight hundred fifty-eight thousand, four hundred twenty-two".