11285320547 has 4 divisors (see below), whose sum is σ = 11397056496. Its totient is φ = 11173584600.

The previous prime is 11285320499. The next prime is 11285320549. The reversal of 11285320547 is 74502358211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74502358211 = 101 ⋅737647111.

It is a cyclic number.

It is not a de Polignac number, because 11285320547 - 2⁶ = 11285320483 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 11285320547.

It is not an unprimeable number, because it can be changed into a prime (11285320549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55867823 + ... + 55868024.

It is an arithmetic number, because the mean of its divisors is an integer number (2849264124).

Almost surely, 2^11285320547 is an apocalyptic number.

11285320547 is a deficient number, since it is larger than the sum of its proper divisors (111735949).

11285320547 is a wasteful number, since it uses less digits than its factorization.

11285320547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111735948.

The product of its (nonzero) digits is 67200, while the sum is 38.

Adding to 11285320547 its reverse (74502358211), we get a palindrome (85787678758).

The spelling of 11285320547 in words is "eleven billion, two hundred eighty-five million, three hundred twenty thousand, five hundred forty-seven".