2105259952081 has 16 divisors (see below), whose sum is σ = 2473354920960. Its totient is φ = 1766621329920.

The previous prime is 2105259952009. The next prime is 2105259952141. The reversal of 2105259952081 is 1802599525012.

It is a cyclic number.

It is not a de Polignac number, because 2105259952081 - 2¹⁵ = 2105259919313 is a prime.

It is a super-2 number, since 2×2105259952081² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2105259952181) 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, 12864336 + ... + 13026958.

It is an arithmetic number, because the mean of its divisors is an integer number (154584682560).

Almost surely, 2^{2105259952081} is an apocalyptic number.

It is an amenable number.

2105259952081 is a deficient number, since it is larger than the sum of its proper divisors (368094968879).

2105259952081 is a wasteful number, since it uses less digits than its factorization.

2105259952081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253176.

The product of its (nonzero) digits is 648000, while the sum is 49.

The spelling of 2105259952081 in words is "two trillion, one hundred five billion, two hundred fifty-nine million, nine hundred fifty-two thousand, eighty-one".