11665053616 has 20 divisors (see below), whose sum is σ = 22607537400. Its totient is φ = 5830850432.

The previous prime is 11665053613. The next prime is 11665053679. The reversal of 11665053616 is 61635056611.

It is not an unprimeable number, because it can be changed into a prime (11665053613) 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, 46381 + ... + 159628.

It is an arithmetic number, because the mean of its divisors is an integer number (1130376870).

Almost surely, 2^11665053616 is an apocalyptic number.

11665053616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11665053616 is a deficient number, since it is larger than the sum of its proper divisors (10942483784).

11665053616 is a wasteful number, since it uses less digits than its factorization.

11665053616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209556 (or 209550 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 11665053616 in words is "eleven billion, six hundred sixty-five million, fifty-three thousand, six hundred sixteen".