1685099956996 has 27 divisors (see below), whose sum is σ = 2959855721767. Its totient is φ = 839438399240.

The previous prime is 1685099956963. The next prime is 1685099957027. The reversal of 1685099956996 is 6996599905861.

The square root of 1685099956996 is 1298114.

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

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 807425865 + ... + 807427951.

Almost surely, 2^{1685099956996} is an apocalyptic number.

1685099956996 is the 1298114-th square number.

It is an amenable number.

1685099956996 is a deficient number, since it is larger than the sum of its proper divisors (1274755764771).

1685099956996 is an frugal number, since it uses more digits than its factorization.

1685099956996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4800 (or 2400 counting only the distinct ones).

The product of its (nonzero) digits is 2550916800, while the sum is 82.

The spelling of 1685099956996 in words is "one trillion, six hundred eighty-five billion, ninety-nine million, nine hundred fifty-six thousand, nine hundred ninety-six".