840805926912 has 384 divisors, whose sum is σ = 2915959737600. Its totient is φ = 234366566400.

The previous prime is 840805926893. The next prime is 840805926973. The reversal of 840805926912 is 219629508048.

It is a happy number.

840805926912 is a `hidden beast` number, since 8 + 40 + 8 + 0 + 592 + 6 + 9 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15843462 + ... + 15896442.

It is an arithmetic number, because the mean of its divisors is an integer number (7593645150).

Almost surely, 2^840805926912 is an apocalyptic number.

840805926912 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840805926912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1457979868800).

840805926912 is an abundant number, since it is smaller than the sum of its proper divisors (2075153810688).

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

840805926912 is a wasteful number, since it uses less digits than its factorization.

840805926912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53060 (or 53034 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 840805926912 in words is "eight hundred forty billion, eight hundred five million, nine hundred twenty-six thousand, nine hundred twelve".