11528734847 has 24 divisors (see below), whose sum is σ = 13715272512. Its totient is φ = 9658958400.

The previous prime is 11528734769. The next prime is 11528734853. The reversal of 11528734847 is 74843782511.

It is not a de Polignac number, because 11528734847 - 2¹⁴ = 11528718463 is a prime.

It is a super-2 number, since 2×11528734847² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11528734795 and 11528734804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11528734897) 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 23 ways as a sum of consecutive naturals, for example, 695597 + ... + 711977.

It is an arithmetic number, because the mean of its divisors is an integer number (571469688).

Almost surely, 2^11528734847 is an apocalyptic number.

11528734847 is a deficient number, since it is larger than the sum of its proper divisors (2186537665).

11528734847 is a wasteful number, since it uses less digits than its factorization.

11528734847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16719 (or 16712 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 50.

The spelling of 11528734847 in words is "eleven billion, five hundred twenty-eight million, seven hundred thirty-four thousand, eight hundred forty-seven".