11503168901 has 12 divisors (see below), whose sum is σ = 13388769900. Its totient is φ = 9854308800.

The previous prime is 11503168867. The next prime is 11503168967. The reversal of 11503168901 is 10986130511.

It is a happy number.

11503168901 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 2 ways, for example, as 1874457025 + 9628711876 = 43295^2 + 98126^2 .

It is not a de Polignac number, because 11503168901 - 2⁶ = 11503168837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11503168981) 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 11 ways as a sum of consecutive naturals, for example, 23075 + ... + 153423.

It is an arithmetic number, because the mean of its divisors is an integer number (1115730825).

Almost surely, 2^11503168901 is an apocalyptic number.

It is an amenable number.

11503168901 is a deficient number, since it is larger than the sum of its proper divisors (1885600999).

11503168901 is a wasteful number, since it uses less digits than its factorization.

11503168901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132164 (or 132157 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The spelling of 11503168901 in words is "eleven billion, five hundred three million, one hundred sixty-eight thousand, nine hundred one".