11631735728 has 20 divisors (see below), whose sum is σ = 22698625320. Its totient is φ = 5774025984.

The previous prime is 11631735701. The next prime is 11631735737. The reversal of 11631735728 is 82753713611.

11631735728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 2612825 + ... + 2617272.

It is an arithmetic number, because the mean of its divisors is an integer number (1134931266).

Almost surely, 2^11631735728 is an apocalyptic number.

It is an amenable number.

11631735728 is a deficient number, since it is larger than the sum of its proper divisors (11066889592).

11631735728 is a wasteful number, since it uses less digits than its factorization.

11631735728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230244 (or 5230238 counting only the distinct ones).

The product of its digits is 211680, while the sum is 44.

The spelling of 11631735728 in words is "eleven billion, six hundred thirty-one million, seven hundred thirty-five thousand, seven hundred twenty-eight".