12406445550 has 72 divisors (see below), whose sum is σ = 33345042120. Its totient is φ = 3307089600.

The previous prime is 12406445539. The next prime is 12406445563. The reversal of 12406445550 is 5554460421.

12406445550 is a `hidden beast` number, since 1 + 2 + 4 + 0 + 64 + 45 + 550 = 666.

It is a super-2 number, since 2×12406445550² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1859220 + ... + 1865880.

It is an arithmetic number, because the mean of its divisors is an integer number (463125585).

Almost surely, 2^12406445550 is an apocalyptic number.

12406445550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12406445550 is an abundant number, since it is smaller than the sum of its proper divisors (20938596570).

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

12406445550 is a wasteful number, since it uses less digits than its factorization.

12406445550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10818 (or 10810 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 12406445550 in words is "twelve billion, four hundred six million, four hundred forty-five thousand, five hundred fifty".