840355104424 has 32 divisors (see below), whose sum is σ = 1722669537600. Its totient is φ = 381143733120.

The previous prime is 840355104389. The next prime is 840355104439. The reversal of 840355104424 is 424401553048.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10407804 + ... + 10488235.

It is an arithmetic number, because the mean of its divisors is an integer number (53833423050).

Almost surely, 2^840355104424 is an apocalyptic number.

It is an amenable number.

840355104424 is an abundant number, since it is smaller than the sum of its proper divisors (882314433176).

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

840355104424 is a wasteful number, since it uses less digits than its factorization.

840355104424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20896513 (or 20896509 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 40.

The spelling of 840355104424 in words is "eight hundred forty billion, three hundred fifty-five million, one hundred four thousand, four hundred twenty-four".