2685921098884 has 27 divisors (see below), whose sum is σ = 4831050294693. Its totient is φ = 1306605318768.

The previous prime is 2685921098873. The next prime is 2685921098909. The reversal of 2685921098884 is 4888901295862.

The square root of 2685921098884 is 1638878.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2403399084100 + 282522014784 = 1550290^2 + 531528^2 .

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 121265899 + ... + 121288045.

Almost surely, 2^{2685921098884} is an apocalyptic number.

2685921098884 is the 1638878-th square number.

It is an amenable number.

2685921098884 is a deficient number, since it is larger than the sum of its proper divisors (2145129195809).

2685921098884 is an frugal number, since it uses more digits than its factorization.

2685921098884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44372 (or 22186 counting only the distinct ones).

The product of its (nonzero) digits is 159252480, while the sum is 70.

The spelling of 2685921098884 in words is "two trillion, six hundred eighty-five billion, nine hundred twenty-one million, ninety-eight thousand, eight hundred eighty-four".