11940189989764 has 81 divisors (see below), whose sum is σ = 21501167221989. Its totient is φ = 5801852200320.

The previous prime is 11940189989759. The next prime is 11940189989779. The reversal of 11940189989764 is 46798998104911.

The square root of 11940189989764 is 3455458.

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., 8979863276164 + 2960326713600 = 2996642^2 + 1720560^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 49544356684 + ... + 49544356924.

Almost surely, 2^{11940189989764} is an apocalyptic number.

11940189989764 is the 3455458-th square number.

It is an amenable number.

11940189989764 is a deficient number, since it is larger than the sum of its proper divisors (9560977232225).

11940189989764 is an frugal number, since it uses more digits than its factorization.

11940189989764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 76.

The spelling of 11940189989764 in words is "eleven trillion, nine hundred forty billion, one hundred eighty-nine million, nine hundred eighty-nine thousand, seven hundred sixty-four".