12445686450 has 90 divisors (see below), whose sum is σ = 34600308039. Its totient is φ = 3316956480.

The previous prime is 12445686431. The next prime is 12445686479. The reversal of 12445686450 is 5468654421.

It is a happy number.

12445686450 is a `hidden beast` number, since 1 + 2 + 44 + 568 + 6 + 45 + 0 = 666.

12445686450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 9199089 + 12436487361 = 3033^2 + 111519^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=78885.

It is a super-2 number, since 2×12445686450² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 12445686396 and 12445686405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 7098774 + ... + 7100526.

Almost surely, 2^12445686450 is an apocalyptic number.

12445686450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12445686450

12445686450 is an abundant number, since it is smaller than the sum of its proper divisors (22154621589).

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

12445686450 is an frugal number, since it uses more digits than its factorization.

12445686450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3530 (or 1763 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The spelling of 12445686450 in words is "twelve billion, four hundred forty-five million, six hundred eighty-six thousand, four hundred fifty".