11117565401 has 4 divisors (see below), whose sum is σ = 11124459492. Its totient is φ = 11110671312.

The previous prime is 11117565397. The next prime is 11117565421. The reversal of 11117565401 is 10456571111.

11117565401 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.

It can be written as a sum of positive squares in 2 ways, for example, as 4911907225 + 6205658176 = 70085^2 + 78776^2 .

It is a cyclic number.

It is not a de Polignac number, because 11117565401 - 2² = 11117565397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11117565421) 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 3 ways as a sum of consecutive naturals, for example, 3444626 + ... + 3447851.

It is an arithmetic number, because the mean of its divisors is an integer number (2781114873).

Almost surely, 2^11117565401 is an apocalyptic number.

It is an amenable number.

11117565401 is a deficient number, since it is larger than the sum of its proper divisors (6894091).

11117565401 is an equidigital number, since it uses as much as digits as its factorization.

11117565401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6894090.

The product of its (nonzero) digits is 4200, while the sum is 32.

The spelling of 11117565401 in words is "eleven billion, one hundred seventeen million, five hundred sixty-five thousand, four hundred one".