2105840051 has 16 divisors (see below), whose sum is σ = 2423151360. Its totient is φ = 1792692000.

The previous prime is 2105840041. The next prime is 2105840057. The reversal of 2105840051 is 1500485012.

It is a cyclic number.

It is not a de Polignac number, because 2105840051 - 2¹⁴ = 2105823667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2105840051.

It is not an unprimeable number, because it can be changed into a prime (2105840057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696020 + ... + 699038.

It is an arithmetic number, because the mean of its divisors is an integer number (151446960).

Almost surely, 2^2105840051 is an apocalyptic number.

2105840051 is a deficient number, since it is larger than the sum of its proper divisors (317311309).

2105840051 is a wasteful number, since it uses less digits than its factorization.

2105840051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 2105840051 is about 45889.4328903725. The cubic root of 2105840051 is about 1281.7651531900.

The spelling of 2105840051 in words is "two billion, one hundred five million, eight hundred forty thousand, fifty-one".