11535414509 has 4 divisors (see below), whose sum is σ = 11552454204. Its totient is φ = 11518374816.

The previous prime is 11535414431. The next prime is 11535414529. The reversal of 11535414509 is 90541453511.

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 6578832100 + 4956582409 = 81110^2 + 70403^2 .

It is a cyclic number.

It is not a de Polignac number, because 11535414509 - 2¹⁶ = 11535348973 is a prime.

It is a super-2 number, since 2×11535414509² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11535414529) 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, 8518832 + ... + 8520185.

It is an arithmetic number, because the mean of its divisors is an integer number (2888113551).

Almost surely, 2^11535414509 is an apocalyptic number.

It is an amenable number.

11535414509 is a deficient number, since it is larger than the sum of its proper divisors (17039695).

11535414509 is an equidigital number, since it uses as much as digits as its factorization.

11535414509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17039694.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 11535414509 in words is "eleven billion, five hundred thirty-five million, four hundred fourteen thousand, five hundred nine".