2091735808668 has 36 divisors (see below), whose sum is σ = 5768119958328. Its totient is φ = 633859335840.

The previous prime is 2091735808583. The next prime is 2091735808751. The reversal of 2091735808668 is 8668085371902.

2091735808668 is a `hidden beast` number, since 209 + 17 + 358 + 0 + 8 + 6 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2641080171 + ... + 2641080962.

It is an arithmetic number, because the mean of its divisors is an integer number (160225554398).

Almost surely, 2^{2091735808668} is an apocalyptic number.

It is an amenable number.

2091735808668 is an abundant number, since it is smaller than the sum of its proper divisors (3676384149660).

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

2091735808668 is a wasteful number, since it uses less digits than its factorization.

2091735808668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5282161154 (or 5282161149 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 63.

The spelling of 2091735808668 in words is "two trillion, ninety-one billion, seven hundred thirty-five million, eight hundred eight thousand, six hundred sixty-eight".