65605198833 has 8 divisors (see below), whose sum is σ = 97192887200. Its totient is φ = 43736799204.

The previous prime is 65605198829. The next prime is 65605198877. The reversal of 65605198833 is 33889150656.

65605198833 is a `hidden beast` number, since 65 + 60 + 519 + 8 + 8 + 3 + 3 = 666.

It is not a de Polignac number, because 65605198833 - 2² = 65605198829 is a prime.

It is a super-2 number, since 2×65605198833² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65605198833.

It is not an unprimeable number, because it can be changed into a prime (65605198033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214911063 + ... + 1214911116.

It is an arithmetic number, because the mean of its divisors is an integer number (12149110900).

Almost surely, 2^65605198833 is an apocalyptic number.

It is an amenable number.

65605198833 is a deficient number, since it is larger than the sum of its proper divisors (31587688367).

65605198833 is a wasteful number, since it uses less digits than its factorization.

65605198833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429822188 (or 2429822182 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 65605198833 in words is "sixty-five billion, six hundred five million, one hundred ninety-eight thousand, eight hundred thirty-three".