1865412168080 has 80 divisors (see below), whose sum is σ = 4493210719680. Its totient is φ = 719379623424.

The previous prime is 1865412168073. The next prime is 1865412168091. The reversal of 1865412168080 is 808612145681.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 995939 + ... + 2173181.

It is an arithmetic number, because the mean of its divisors is an integer number (56165133996).

Almost surely, 2^{1865412168080} is an apocalyptic number.

1865412168080 is a gapful number since it is divisible by the number (10) 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 1865412168080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2246605359840).

1865412168080 is an abundant number, since it is smaller than the sum of its proper divisors (2627798551600).

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

1865412168080 is a wasteful number, since it uses less digits than its factorization.

1865412168080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177968 (or 1177962 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 50.

The spelling of 1865412168080 in words is "one trillion, eight hundred sixty-five billion, four hundred twelve million, one hundred sixty-eight thousand, eighty".