2101717808 has 40 divisors (see below), whose sum is σ = 4212386640. Its totient is φ = 1015061760.

The previous prime is 2101717801. The next prime is 2101717831. The reversal of 2101717808 is 8087171012.

It is not an unprimeable number, because it can be changed into a prime (2101717801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69518 + ... + 95058.

It is an arithmetic number, because the mean of its divisors is an integer number (105309666).

Almost surely, 2^2101717808 is an apocalyptic number.

It is an amenable number.

2101717808 is an abundant number, since it is smaller than the sum of its proper divisors (2110668832).

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

2101717808 is a wasteful number, since it uses less digits than its factorization.

2101717808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25725 (or 25719 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 35.

The square root of 2101717808 is about 45844.4959400799. The cubic root of 2101717808 is about 1280.9282427009.

The spelling of 2101717808 in words is "two billion, one hundred one million, seven hundred seventeen thousand, eight hundred eight".