7855782912 has 198 divisors, whose sum is σ = 23465154024. Its totient is φ = 2531266560.

The previous prime is 7855782889. The next prime is 7855782919. The reversal of 7855782912 is 2192875587.

7855782912 is a `hidden beast` number, since 7 + 8 + 557 + 82 + 9 + 1 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7855782919) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8856133 + ... + 8857019.

Almost surely, 2^7855782912 is an apocalyptic number.

7855782912 is a gapful number since it is divisible by the number (72) 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 7855782912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11732577012).

7855782912 is an abundant number, since it is smaller than the sum of its proper divisors (15609371112).

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

7855782912 is a wasteful number, since it uses less digits than its factorization.

7855782912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975 (or 923 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 54.

The square root of 7855782912 is about 88632.8545856445. The cubic root of 7855782912 is about 1987.9089600117.

The spelling of 7855782912 in words is "seven billion, eight hundred fifty-five million, seven hundred eighty-two thousand, nine hundred twelve".