11505322151 has 4 divisors (see below), whose sum is σ = 11515907712. Its totient is φ = 11494736592.

The previous prime is 11505322139. The next prime is 11505322201. The reversal of 11505322151 is 15122350511.

11505322151 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11505322151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11505322151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11505322121) 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, 5291150 + ... + 5293323.

It is an arithmetic number, because the mean of its divisors is an integer number (2878976928).

Almost surely, 2^11505322151 is an apocalyptic number.

11505322151 is a deficient number, since it is larger than the sum of its proper divisors (10585561).

11505322151 is a wasteful number, since it uses less digits than its factorization.

11505322151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10585560.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 11505322151 its reverse (15122350511), we get a palindrome (26627672662).

The spelling of 11505322151 in words is "eleven billion, five hundred five million, three hundred twenty-two thousand, one hundred fifty-one".