11663784001 has 3 divisors (see below), whose sum is σ = 11663892001. Its totient is φ = 11663676002.

The previous prime is 11663783981. The next prime is 11663784029. The reversal of 11663784001 is 10048736611.

The square root of 11663784001 is 107999.

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

11663784001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 11663784001 - 2¹¹ = 11663781953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11663784091) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 54000 + ... + 161998.

Almost surely, 2^11663784001 is an apocalyptic number.

11663784001 is the 107999-th square number.

11663784001 is the 54000-th centered octagonal number.

It is an amenable number.

11663784001 is a deficient number, since it is larger than the sum of its proper divisors (108000).

11663784001 is an frugal number, since it uses more digits than its factorization.

11663784001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215998 (or 107999 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

It can be divided in two parts, 11663 and 784001, that added together give a square (795664 = 892²).

The spelling of 11663784001 in words is "eleven billion, six hundred sixty-three million, seven hundred eighty-four thousand, one".