11778389632 has 16 divisors (see below), whose sum is σ = 23464760850. Its totient is φ = 5889194752.

The previous prime is 11778389629. The next prime is 11778389663. The reversal of 11778389632 is 23698387711.

It is a happy number.

11778389632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11773118016 + 5271616 = 108504^2 + 2296^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

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 as a sum of consecutive naturals, namely, 46009207 + ... + 46009462.

Almost surely, 2^11778389632 is an apocalyptic number.

It is an amenable number.

11778389632 is a deficient number, since it is larger than the sum of its proper divisors (11686371218).

11778389632 is an frugal number, since it uses more digits than its factorization.

11778389632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92018683 (or 92018671 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 55.

The spelling of 11778389632 in words is "eleven billion, seven hundred seventy-eight million, three hundred eighty-nine thousand, six hundred thirty-two".