2668243412205 has 24 divisors (see below), whose sum is σ = 5285663140992. Its totient is φ = 1219768416864.

The previous prime is 2668243412183. The next prime is 2668243412209. The reversal of 2668243412205 is 5022143428662.

It is a happy number.

2668243412205 is a `hidden beast` number, since 2 + 6 + 6 + 8 + 2 + 434 + 1 + 2 + 205 = 666.

It is not a de Polignac number, because 2668243412205 - 2¹⁵ = 2668243379437 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668243412209) 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, 4235306689 + ... + 4235307318.

It is an arithmetic number, because the mean of its divisors is an integer number (220235964208).

Almost surely, 2^{2668243412205} is an apocalyptic number.

It is an amenable number.

2668243412205 is a deficient number, since it is larger than the sum of its proper divisors (2617419728787).

2668243412205 is a wasteful number, since it uses less digits than its factorization.

2668243412205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8470614025 (or 8470614022 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 2668243412205 in words is "two trillion, six hundred sixty-eight billion, two hundred forty-three million, four hundred twelve thousand, two hundred five".