11583165666856 has 32 divisors (see below), whose sum is σ = 24930413231040. Its totient is φ = 4942345068288.

The previous prime is 11583165666851. The next prime is 11583165666893. The reversal of 11583165666856 is 65866656138511.

It is a junction number, because it is equal to n+sod(n) for n = 11583165666791 and 11583165666800.

It is not an unprimeable number, because it can be changed into a prime (11583165666851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455586945 + ... + 455612368.

It is an arithmetic number, because the mean of its divisors is an integer number (779075413470).

Almost surely, 2^{11583165666856} is an apocalyptic number.

It is an amenable number.

11583165666856 is an abundant number, since it is smaller than the sum of its proper divisors (13347247564184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11583165666856 is a wasteful number, since it uses less digits than its factorization.

11583165666856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911199553 (or 911199549 counting only the distinct ones).

The product of its digits is 186624000, while the sum is 67.

The spelling of 11583165666856 in words is "eleven trillion, five hundred eighty-three billion, one hundred sixty-five million, six hundred sixty-six thousand, eight hundred fifty-six".