2105643774299 has 4 divisors (see below), whose sum is σ = 2267616372336. Its totient is φ = 1943671176264.

The previous prime is 2105643774287. The next prime is 2105643774341. The reversal of 2105643774299 is 9924773465012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105643774299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105643771299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80986298999 + ... + 80986299024.

It is an arithmetic number, because the mean of its divisors is an integer number (566904093084).

Almost surely, 2^{2105643774299} is an apocalyptic number.

2105643774299 is a deficient number, since it is larger than the sum of its proper divisors (161972598037).

2105643774299 is a wasteful number, since it uses less digits than its factorization.

2105643774299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161972598036.

The product of its (nonzero) digits is 22861440, while the sum is 59.

The spelling of 2105643774299 in words is "two trillion, one hundred five billion, six hundred forty-three million, seven hundred seventy-four thousand, two hundred ninety-nine".