11665116057 has 24 divisors (see below), whose sum is σ = 18879483456. Its totient is φ = 6375962208.

The previous prime is 11665116053. The next prime is 11665116079. The reversal of 11665116057 is 75061156611.

It is not a de Polignac number, because 11665116057 - 2² = 11665116053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11665116053) 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, 1721718 + ... + 1728479.

It is an arithmetic number, because the mean of its divisors is an integer number (786645144).

Almost surely, 2^11665116057 is an apocalyptic number.

It is an amenable number.

11665116057 is a deficient number, since it is larger than the sum of its proper divisors (7214367399).

11665116057 is a wasteful number, since it uses less digits than its factorization.

11665116057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450237 (or 3450230 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 39.

The spelling of 11665116057 in words is "eleven billion, six hundred sixty-five million, one hundred sixteen thousand, fifty-seven".