2105891106816 has 104 divisors (see below), whose sum is σ = 6417170669824. Its totient is φ = 601683148800.

The previous prime is 2105891106749. The next prime is 2105891106827. The reversal of 2105891106816 is 6186011985012.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12155260 + ... + 12327291.

Almost surely, 2^{2105891106816} is an apocalyptic number.

It is an amenable number.

2105891106816 is an abundant number, since it is smaller than the sum of its proper divisors (4311279563008).

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

2105891106816 is an equidigital number, since it uses as much as digits as its factorization.

2105891106816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24482585 (or 24482563 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 48.

The spelling of 2105891106816 in words is "two trillion, one hundred five billion, eight hundred ninety-one million, one hundred six thousand, eight hundred sixteen".