840457125888 has 288 divisors, whose sum is σ = 2414399944320. Its totient is φ = 259082158080.

The previous prime is 840457125853. The next prime is 840457125929. The reversal of 840457125888 is 888521754048.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394394583 + ... + 394396713.

It is an arithmetic number, because the mean of its divisors is an integer number (8383333140).

Almost surely, 2^840457125888 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 840457125888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1207199972160).

840457125888 is an abundant number, since it is smaller than the sum of its proper divisors (1573942818432).

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

840457125888 is an equidigital number, since it uses as much as digits as its factorization.

840457125888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244 (or 2212 counting only the distinct ones).

The product of its (nonzero) digits is 22937600, while the sum is 60.

The spelling of 840457125888 in words is "eight hundred forty billion, four hundred fifty-seven million, one hundred twenty-five thousand, eight hundred eighty-eight".