2786809094856 has 384 divisors, whose sum is σ = 7985278080000. Its totient is φ = 876946176000.

The previous prime is 2786809094833. The next prime is 2786809094873. The reversal of 2786809094856 is 6584909086872.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5475066730 + ... + 5475067238.

It is an arithmetic number, because the mean of its divisors is an integer number (20794995000).

Almost surely, 2^{2786809094856} 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 2786809094856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3992639040000).

2786809094856 is an abundant number, since it is smaller than the sum of its proper divisors (5198468985144).

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

2786809094856 is a wasteful number, since it uses less digits than its factorization.

2786809094856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 418037760, while the sum is 72.

The spelling of 2786809094856 in words is "two trillion, seven hundred eighty-six billion, eight hundred nine million, ninety-four thousand, eight hundred fifty-six".