11033681385 has 48 divisors (see below), whose sum is σ = 18195008832. Its totient is φ = 5709484800.

The previous prime is 11033681381. The next prime is 11033681389. The reversal of 11033681385 is 58318633011.

It is a happy number.

11033681385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11033681381) and next prime (11033681389).

It is not a de Polignac number, because 11033681385 - 2² = 11033681381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11033681381) 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 47 ways as a sum of consecutive naturals, for example, 11725015 + ... + 11725955.

It is an arithmetic number, because the mean of its divisors is an integer number (379062684).

Almost surely, 2^11033681385 is an apocalyptic number.

11033681385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11033681385 is a deficient number, since it is larger than the sum of its proper divisors (7161327447).

11033681385 is an equidigital number, since it uses as much as digits as its factorization.

11033681385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 11033681385 in words is "eleven billion, thirty-three million, six hundred eighty-one thousand, three hundred eighty-five".