2180285194464 has 144 divisors (see below), whose sum is σ = 6832405852272. Its totient is φ = 655255609344.

The previous prime is 2180285194463. The next prime is 2180285194481. The reversal of 2180285194464 is 4644915820812.

2180285194464 is a `hidden beast` number, since 2 + 1 + 8 + 0 + 28 + 519 + 44 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 2180285194464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180285194463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6610417 + ... + 6932400.

It is an arithmetic number, because the mean of its divisors is an integer number (47447262863).

Almost surely, 2^{2180285194464} is an apocalyptic number.

2180285194464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2180285194464 is an abundant number, since it is smaller than the sum of its proper divisors (4652120657808).

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

2180285194464 is a wasteful number, since it uses less digits than its factorization.

2180285194464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13542889 (or 13542878 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The spelling of 2180285194464 in words is "two trillion, one hundred eighty billion, two hundred eighty-five million, one hundred ninety-four thousand, four hundred sixty-four".