2685989966063 has 4 divisors (see below), whose sum is σ = 2685993746280. Its totient is φ = 2685986185848.

The previous prime is 2685989966057. The next prime is 2685989966167. The reversal of 2685989966063 is 3606699895862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2685989966063 - 2¹⁴ = 2685989949679 is a prime.

It is a super-2 number, since 2×2685989966063² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2685989966263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467273 + ... + 2364386.

It is an arithmetic number, because the mean of its divisors is an integer number (671498436570).

Almost surely, 2^{2685989966063} is an apocalyptic number.

2685989966063 is a deficient number, since it is larger than the sum of its proper divisors (3780217).

2685989966063 is an equidigital number, since it uses as much as digits as its factorization.

2685989966063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780216.

The product of its (nonzero) digits is 1813985280, while the sum is 77.

The spelling of 2685989966063 in words is "two trillion, six hundred eighty-five billion, nine hundred eighty-nine million, nine hundred sixty-six thousand, sixty-three".