2112705655 has 8 divisors (see below), whose sum is σ = 2565792432. Its totient is φ = 1669800768.

The previous prime is 2112705649. The next prime is 2112705731. The reversal of 2112705655 is 5565072112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2112705655 - 2¹³ = 2112697463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2112705655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2545014 + ... + 2545843.

It is an arithmetic number, because the mean of its divisors is an integer number (320724054).

Almost surely, 2^2112705655 is an apocalyptic number.

2112705655 is a deficient number, since it is larger than the sum of its proper divisors (453086777).

2112705655 is an equidigital number, since it uses as much as digits as its factorization.

2112705655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090945.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 2112705655 is about 45964.1779541416. The cubic root of 2112705655 is about 1283.1566082990.

Adding to 2112705655 its reverse (5565072112), we get a palindrome (7677777767).

The spelling of 2112705655 in words is "two billion, one hundred twelve million, seven hundred five thousand, six hundred fifty-five".