1806785412912 has 200 divisors, whose sum is σ = 5341203141120. Its totient is φ = 589503277440.

The previous prime is 1806785412857. The next prime is 1806785412947. The reversal of 1806785412912 is 2192145876081.

1806785412912 is a `hidden beast` number, since 1 + 8 + 0 + 6 + 7 + 8 + 541 + 2 + 91 + 2 = 666.

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 39 ways as a sum of consecutive naturals, for example, 12719593 + ... + 12860855.

Almost surely, 2^{1806785412912} is an apocalyptic number.

1806785412912 is a gapful number since it is divisible by the number (12) 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 1806785412912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2670601570560).

1806785412912 is an abundant number, since it is smaller than the sum of its proper divisors (3534417728208).

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

1806785412912 is a wasteful number, since it uses less digits than its factorization.

1806785412912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141493 (or 141478 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 1806785412912 in words is "one trillion, eight hundred six billion, seven hundred eighty-five million, four hundred twelve thousand, nine hundred twelve".