6609397912818 has 8 divisors (see below), whose sum is σ = 13218795825648. Its totient is φ = 2203132637604.

The previous prime is 6609397912787. The next prime is 6609397912883. The reversal of 6609397912818 is 8182197939066.

It is a sphenic number, since it is the product of 3 distinct primes.

6609397912818 is an admirable number.

It is a super-2 number, since 2×6609397912818² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550783159396 + ... + 550783159407.

It is an arithmetic number, because the mean of its divisors is an integer number (1652349478206).

Almost surely, 2^{6609397912818} is an apocalyptic number.

6609397912818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6609397912818 is a wasteful number, since it uses less digits than its factorization.

6609397912818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101566318808.

The product of its (nonzero) digits is 70543872, while the sum is 69.

The spelling of 6609397912818 in words is "six trillion, six hundred nine billion, three hundred ninety-seven million, nine hundred twelve thousand, eight hundred eighteen".