120216042705645 has 16 divisors (see below), whose sum is σ = 213717409254720. Its totient is φ = 64115222776272.

The previous prime is 120216042705587. The next prime is 120216042705653. The reversal of 120216042705645 is 546507240612021.

120216042705645 is a `hidden beast` number, since 1 + 2 + 0 + 2 + 1 + 60 + 4 + 27 + 0 + 564 + 5 = 666.

It is not a de Polignac number, because 120216042705645 - 2⁹ = 120216042705133 is a prime.

It is a super-3 number, since 3×120216042705645³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 120216042705645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445244602479 + ... + 445244602748.

It is an arithmetic number, because the mean of its divisors is an integer number (13357338078420).

Almost surely, 2^{120216042705645} is an apocalyptic number.

120216042705645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120216042705645 is a deficient number, since it is larger than the sum of its proper divisors (93501366549075).

120216042705645 is an equidigital number, since it uses as much as digits as its factorization.

120216042705645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890489205241 (or 890489205235 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 120216042705645 in words is "one hundred twenty trillion, two hundred sixteen billion, forty-two million, seven hundred five thousand, six hundred forty-five".