11535242545 has 4 divisors (see below), whose sum is σ = 13842291060. Its totient is φ = 9228194032.

The previous prime is 11535242527. The next prime is 11535242549. The reversal of 11535242545 is 54524253511.

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 3576996864 + 7958245681 = 59808^2 + 89209^2 .

It is a cyclic number.

It is not a de Polignac number, because 11535242545 - 2¹³ = 11535234353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11535242549) 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, 1153524250 + ... + 1153524259.

It is an arithmetic number, because the mean of its divisors is an integer number (3460572765).

Almost surely, 2^11535242545 is an apocalyptic number.

It is an amenable number.

11535242545 is a deficient number, since it is larger than the sum of its proper divisors (2307048515).

11535242545 is an equidigital number, since it uses as much as digits as its factorization.

11535242545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307048514.

The product of its digits is 120000, while the sum is 37.

The spelling of 11535242545 in words is "eleven billion, five hundred thirty-five million, two hundred forty-two thousand, five hundred forty-five".