2105858585812 has 48 divisors (see below), whose sum is σ = 3880256067072. Its totient is φ = 998858488320.

The previous prime is 2105858585767. The next prime is 2105858585821. The reversal of 2105858585812 is 2185858585012.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 903048 + ... + 2242144.

It is an arithmetic number, because the mean of its divisors is an integer number (80838668064).

Almost surely, 2^{2105858585812} is an apocalyptic number.

It is an amenable number.

2105858585812 is a deficient number, since it is larger than the sum of its proper divisors (1774397481260).

2105858585812 is a wasteful number, since it uses less digits than its factorization.

2105858585812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339408 (or 1339406 counting only the distinct ones).

The product of its (nonzero) digits is 10240000, while the sum is 58.

The spelling of 2105858585812 in words is "two trillion, one hundred five billion, eight hundred fifty-eight million, five hundred eighty-five thousand, eight hundred twelve".