2685509474969 has 8 divisors (see below), whose sum is σ = 2717928948672. Its totient is φ = 2653091523760.

The previous prime is 2685509474903. The next prime is 2685509474987. The reversal of 2685509474969 is 9694749055862.

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

It is a cyclic number.

It is not a de Polignac number, because 2685509474969 - 2¹² = 2685509470873 is a prime.

It is a super-2 number, since 2×2685509474969² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2685509474896 and 2685509474905.

It is not an unprimeable number, because it can be changed into a prime (2685509474269) 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, 3392867 + ... + 4108839.

It is an arithmetic number, because the mean of its divisors is an integer number (339741118584).

Almost surely, 2^{2685509474969} is an apocalyptic number.

It is an amenable number.

2685509474969 is a deficient number, since it is larger than the sum of its proper divisors (32419473703).

2685509474969 is an equidigital number, since it uses as much as digits as its factorization.

2685509474969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761247.

The product of its (nonzero) digits is 1175731200, while the sum is 74.

The spelling of 2685509474969 in words is "two trillion, six hundred eighty-five billion, five hundred nine million, four hundred seventy-four thousand, nine hundred sixty-nine".