11665053615 has 32 divisors (see below), whose sum is σ = 18932621760. Its totient is φ = 6131966976.

The previous prime is 11665053613. The next prime is 11665053679. The reversal of 11665053615 is 51635056611.

It is not a de Polignac number, because 11665053615 - 2¹ = 11665053613 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 2245441 + ... + 2250629.

It is an arithmetic number, because the mean of its divisors is an integer number (591644430).

Almost surely, 2^11665053615 is an apocalyptic number.

11665053615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11665053615 is a deficient number, since it is larger than the sum of its proper divisors (7267568145).

11665053615 is a wasteful number, since it uses less digits than its factorization.

11665053615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7323.

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 11665053615 in words is "eleven billion, six hundred sixty-five million, fifty-three thousand, six hundred fifteen".