2105566572 has 12 divisors (see below), whose sum is σ = 4912988696. Its totient is φ = 701855520.

The previous prime is 2105566559. The next prime is 2105566577. The reversal of 2105566572 is 2756655012.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 2105566572.

It is not an unprimeable number, because it can be changed into a prime (2105566577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87731929 + ... + 87731952.

Almost surely, 2^2105566572 is an apocalyptic number.

It is an amenable number.

2105566572 is an abundant number, since it is smaller than the sum of its proper divisors (2807422124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2105566572 is a wasteful number, since it uses less digits than its factorization.

2105566572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175463888 (or 175463886 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 2105566572 is about 45886.4530335479. The cubic root of 2105566572 is about 1281.7096644825.

The spelling of 2105566572 in words is "two billion, one hundred five million, five hundred sixty-six thousand, five hundred seventy-two".