840279699168 has 384 divisors, whose sum is σ = 2746150944768. Its totient is φ = 219062237184.

The previous prime is 840279699113. The next prime is 840279699173. The reversal of 840279699168 is 861996972048.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 340606671 + ... + 340609137.

It is an arithmetic number, because the mean of its divisors is an integer number (7151434752).

Almost surely, 2^840279699168 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 840279699168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1373075472384).

840279699168 is an abundant number, since it is smaller than the sum of its proper divisors (1905871245600).

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

840279699168 is a wasteful number, since it uses less digits than its factorization.

840279699168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934 (or 2926 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 69.

The spelling of 840279699168 in words is "eight hundred forty billion, two hundred seventy-nine million, six hundred ninety-nine thousand, one hundred sixty-eight".