11038940641 has 4 divisors (see below), whose sum is σ = 11048771632. Its totient is φ = 11029109652.

The previous prime is 11038940611. The next prime is 11038940681. The reversal of 11038940641 is 14604983011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11038940641 - 2⁵ = 11038940609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11038940641.

It is not an unprimeable number, because it can be changed into a prime (11038940611) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4913811 + ... + 4916056.

It is an arithmetic number, because the mean of its divisors is an integer number (2762192908).

Almost surely, 2^11038940641 is an apocalyptic number.

It is an amenable number.

11038940641 is a deficient number, since it is larger than the sum of its proper divisors (9830991).

11038940641 is an equidigital number, since it uses as much as digits as its factorization.

11038940641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9830990.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 11038940641 in words is "eleven billion, thirty-eight million, nine hundred forty thousand, six hundred forty-one".