2168447672205 has 24 divisors (see below), whose sum is σ = 3838613755392. Its totient is φ = 1131898925664.

The previous prime is 2168447672201. The next prime is 2168447672213. The reversal of 2168447672205 is 5022767448612.

2168447672205 is a `hidden beast` number, since 2 + 1 + 6 + 84 + 476 + 72 + 20 + 5 = 666.

It is not a de Polignac number, because 2168447672205 - 2² = 2168447672201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168447672201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 512633269 + ... + 512637498.

It is an arithmetic number, because the mean of its divisors is an integer number (159942239808).

Almost surely, 2^{2168447672205} is an apocalyptic number.

It is an amenable number.

2168447672205 is a deficient number, since it is larger than the sum of its proper divisors (1670166083187).

2168447672205 is a wasteful number, since it uses less digits than its factorization.

2168447672205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025270825 (or 1025270822 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 2168447672205 in words is "two trillion, one hundred sixty-eight billion, four hundred forty-seven million, six hundred seventy-two thousand, two hundred five".