2105666165562 has 64 divisors (see below), whose sum is σ = 4302764928000. Its totient is φ = 686808059904.

The previous prime is 2105666165549. The next prime is 2105666165563. The reversal of 2105666165562 is 2655616665012.

It is not an unprimeable number, because it can be changed into a prime (2105666165563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109381314 + ... + 109400562.

It is an arithmetic number, because the mean of its divisors is an integer number (67230702000).

Almost surely, 2^{2105666165562} is an apocalyptic number.

2105666165562 is an abundant number, since it is smaller than the sum of its proper divisors (2197098762438).

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

2105666165562 is a wasteful number, since it uses less digits than its factorization.

2105666165562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21287.

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 2105666165562 in words is "two trillion, one hundred five billion, six hundred sixty-six million, one hundred sixty-five thousand, five hundred sixty-two".