12051366556 has 24 divisors (see below), whose sum is σ = 21823920720. Its totient is φ = 5816090112.

The previous prime is 12051366541. The next prime is 12051366559. The reversal of 12051366556 is 65566315021.

It is a super-2 number, since 2×12051366556² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12051366559) 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, 405211 + ... + 433933.

It is an arithmetic number, because the mean of its divisors is an integer number (909330030).

Almost surely, 2^12051366556 is an apocalyptic number.

It is an amenable number.

12051366556 is a deficient number, since it is larger than the sum of its proper divisors (9772554164).

12051366556 is a wasteful number, since it uses less digits than its factorization.

12051366556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32373 (or 32371 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 12051366556 in words is "twelve billion, fifty-one million, three hundred sixty-six thousand, five hundred fifty-six".