2105918783356 has 12 divisors (see below), whose sum is σ = 3685626559440. Its totient is φ = 1052882623520.

The previous prime is 2105918783341. The next prime is 2105918783369. The reversal of 2105918783356 is 6533878195012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2105918783356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19130296 + ... + 19240063.

It is an arithmetic number, because the mean of its divisors is an integer number (307135546620).

Almost surely, 2^{2105918783356} is an apocalyptic number.

It is an amenable number.

2105918783356 is a deficient number, since it is larger than the sum of its proper divisors (1579707776084).

2105918783356 is a wasteful number, since it uses less digits than its factorization.

2105918783356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38384084 (or 38384082 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 2105918783356 in words is "two trillion, one hundred five billion, nine hundred eighteen million, seven hundred eighty-three thousand, three hundred fifty-six".