8199780017 has 48 divisors (see below), whose sum is σ = 10328290560. Its totient is φ = 6444049920.

The previous prime is 8199780013. The next prime is 8199780031. The reversal of 8199780017 is 7100879918.

It is not a de Polignac number, because 8199780017 - 2² = 8199780013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8199780013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6390458 + ... + 6391740.

It is an arithmetic number, because the mean of its divisors is an integer number (215172720).

Almost surely, 2^8199780017 is an apocalyptic number.

It is an amenable number.

8199780017 is a deficient number, since it is larger than the sum of its proper divisors (2128510543).

8199780017 is a wasteful number, since it uses less digits than its factorization.

8199780017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574 (or 1563 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 50.

The square root of 8199780017 is about 90552.6367203076. The cubic root of 8199780017 is about 2016.5116424452.

The spelling of 8199780017 in words is "eight billion, one hundred ninety-nine million, seven hundred eighty thousand, seventeen".