11511531351345 has 8 divisors (see below), whose sum is σ = 18418450162176. Its totient is φ = 6139483387376.

The previous prime is 11511531351343. The next prime is 11511531351373. The reversal of 11511531351345 is 54315313511511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11511531351345 - 2¹ = 11511531351343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11511531351343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383717711697 + ... + 383717711726.

It is an arithmetic number, because the mean of its divisors is an integer number (2302306270272).

Almost surely, 2^{11511531351345} is an apocalyptic number.

11511531351345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11511531351345 is a deficient number, since it is larger than the sum of its proper divisors (6906918810831).

11511531351345 is an equidigital number, since it uses as much as digits as its factorization.

11511531351345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767435423431.

The product of its digits is 67500, while the sum is 39.

Adding to 11511531351345 its reverse (54315313511511), we get a palindrome (65826844862856).

The spelling of 11511531351345 in words is "eleven trillion, five hundred eleven billion, five hundred thirty-one million, three hundred fifty-one thousand, three hundred forty-five".