1786121800056 has 48 divisors (see below), whose sum is σ = 5277178047960. Its totient is φ = 541249030080.

The previous prime is 1786121800049. The next prime is 1786121800081. The reversal of 1786121800056 is 6500081216871.

1786121800056 is a `hidden beast` number, since 17 + 8 + 612 + 18 + 0 + 0 + 0 + 5 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1786121799984 and 1786121800020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1127601355 + ... + 1127602938.

Almost surely, 2^{1786121800056} is an apocalyptic number.

It is an amenable number.

1786121800056 is an abundant number, since it is smaller than the sum of its proper divisors (3491056247904).

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

1786121800056 is a wasteful number, since it uses less digits than its factorization.

1786121800056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255204316 (or 2255204309 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 1786121800056 in words is "one trillion, seven hundred eighty-six billion, one hundred twenty-one million, eight hundred thousand, fifty-six".