11505340245 has 16 divisors (see below), whose sum is σ = 21038336640. Its totient is φ = 5259584064.

The previous prime is 11505340243. The next prime is 11505340247. The reversal of 11505340245 is 54204350511.

It is an interprime number because it is at equal distance from previous prime (11505340243) and next prime (11505340247).

It is not a de Polignac number, because 11505340245 - 2¹ = 11505340243 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11505340243) 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 15 ways as a sum of consecutive naturals, for example, 54787230 + ... + 54787439.

It is an arithmetic number, because the mean of its divisors is an integer number (1314896040).

Almost surely, 2^11505340245 is an apocalyptic number.

11505340245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11505340245 is a deficient number, since it is larger than the sum of its proper divisors (9532996395).

11505340245 is a wasteful number, since it uses less digits than its factorization.

11505340245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109574684.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 11505340245 its reverse (54204350511), we get a palindrome (65709690756).

The spelling of 11505340245 in words is "eleven billion, five hundred five million, three hundred forty thousand, two hundred forty-five".