1800780119856 has 30 divisors (see below), whose sum is σ = 5039683252500. Its totient is φ = 600260039904.

The previous prime is 1800780119821. The next prime is 1800780119861. The reversal of 1800780119856 is 6589110870081.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6252708606 + ... + 6252708893.

It is an arithmetic number, because the mean of its divisors is an integer number (167989441750).

Almost surely, 2^{1800780119856} is an apocalyptic number.

1800780119856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1800780119856 is an abundant number, since it is smaller than the sum of its proper divisors (3238903132644).

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

1800780119856 is a wasteful number, since it uses less digits than its factorization.

1800780119856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12505417513 (or 12505417504 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 54.

The spelling of 1800780119856 in words is "one trillion, eight hundred billion, seven hundred eighty million, one hundred nineteen thousand, eight hundred fifty-six".