11652015509 has 4 divisors (see below), whose sum is σ = 12337428204. Its totient is φ = 10966602816.

The previous prime is 11652015499. The next prime is 11652015521. The reversal of 11652015509 is 90551025611.

11652015509 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 8445058609 + 3206956900 = 91897^2 + 56630^2 .

It is a cyclic number.

It is not a de Polignac number, because 11652015509 - 2²⁸ = 11383580053 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 (11652015209) 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, 342706322 + ... + 342706355.

It is an arithmetic number, because the mean of its divisors is an integer number (3084357051).

Almost surely, 2^11652015509 is an apocalyptic number.

It is an amenable number.

11652015509 is a deficient number, since it is larger than the sum of its proper divisors (685412695).

11652015509 is an equidigital number, since it uses as much as digits as its factorization.

11652015509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685412694.

The product of its (nonzero) digits is 13500, while the sum is 35.

The spelling of 11652015509 in words is "eleven billion, six hundred fifty-two million, fifteen thousand, five hundred nine".