11665236056 has 8 divisors (see below), whose sum is σ = 21872317620. Its totient is φ = 5832618024.

The previous prime is 11665236053. The next prime is 11665236061. The reversal of 11665236056 is 65063256611.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11665236053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 729077246 + ... + 729077261.

Almost surely, 2^11665236056 is an apocalyptic number.

It is an amenable number.

11665236056 is a deficient number, since it is larger than the sum of its proper divisors (10207081564).

11665236056 is a wasteful number, since it uses less digits than its factorization.

11665236056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458154513 (or 1458154509 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 11665236056 in words is "eleven billion, six hundred sixty-five million, two hundred thirty-six thousand, fifty-six".