840078329076 has 240 divisors, whose sum is σ = 2597991580800. Its totient is φ = 231604676352.

The previous prime is 840078329071. The next prime is 840078329087. The reversal of 840078329076 is 670923870048.

840078329076 is a `hidden beast` number, since 8 + 400 + 7 + 83 + 2 + 90 + 76 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840078329071) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 155021895 + ... + 155027313.

It is an arithmetic number, because the mean of its divisors is an integer number (10824964920).

Almost surely, 2^840078329076 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 840078329076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1298995790400).

840078329076 is an abundant number, since it is smaller than the sum of its proper divisors (1757913251724).

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

840078329076 is a wasteful number, since it uses less digits than its factorization.

840078329076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7828 (or 7817 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 840078329076 in words is "eight hundred forty billion, seventy-eight million, three hundred twenty-nine thousand, seventy-six".