11661050056 has 16 divisors (see below), whose sum is σ = 22329671040. Its totient is φ = 5706471120.

The previous prime is 11661050053. The next prime is 11661050059. The reversal of 11661050056 is 65005016611.

It is an interprime number because it is at equal distance from previous prime (11661050053) and next prime (11661050059).

It is not an unprimeable number, because it can be changed into a prime (11661050053) 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, 15506340 + ... + 15507091.

It is an arithmetic number, because the mean of its divisors is an integer number (1395604440).

Almost surely, 2^11661050056 is an apocalyptic number.

It is an amenable number.

11661050056 is a deficient number, since it is larger than the sum of its proper divisors (10668620984).

11661050056 is a wasteful number, since it uses less digits than its factorization.

11661050056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31013484 (or 31013480 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

Adding to 11661050056 its reverse (65005016611), we get a palindrome (76666066667).

The spelling of 11661050056 in words is "eleven billion, six hundred sixty-one million, fifty thousand, fifty-six".