11505535516 has 48 divisors (see below), whose sum is σ = 21572490240. Its totient is φ = 5359471040.

The previous prime is 11505535463. The next prime is 11505535567. The reversal of 11505535516 is 61553550511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372231 + ... + 401953.

It is an arithmetic number, because the mean of its divisors is an integer number (449426880).

Almost surely, 2^11505535516 is an apocalyptic number.

It is an amenable number.

11505535516 is a deficient number, since it is larger than the sum of its proper divisors (10066954724).

11505535516 is a wasteful number, since it uses less digits than its factorization.

11505535516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29874 (or 29872 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 37.

The spelling of 11505535516 in words is "eleven billion, five hundred five million, five hundred thirty-five thousand, five hundred sixteen".