840432945632 has 768 divisors, whose sum is σ = 2275257600000. Its totient is φ = 303160983552.

The previous prime is 840432945601. The next prime is 840432945661. The reversal of 840432945632 is 236549234048.

It is a happy number.

It is a super-2 number, since 2×840432945632² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5640489494 + ... + 5640489642.

It is an arithmetic number, because the mean of its divisors is an integer number (2962575000).

Almost surely, 2^840432945632 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 840432945632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1137628800000).

840432945632 is an abundant number, since it is smaller than the sum of its proper divisors (1434824654368).

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

840432945632 is a wasteful number, since it uses less digits than its factorization.

840432945632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 50.

The spelling of 840432945632 in words is "eight hundred forty billion, four hundred thirty-two million, nine hundred forty-five thousand, six hundred thirty-two".