12450305140 has 144 divisors (see below), whose sum is σ = 33517072512. Its totient is φ = 3848511744.

The previous prime is 12450305111. The next prime is 12450305209. The reversal of 12450305140 is 4150305421.

It is a happy number.

It is a super-2 number, since 2×12450305140² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 536457 + ... + 559183.

It is an arithmetic number, because the mean of its divisors is an integer number (232757448).

Almost surely, 2^12450305140 is an apocalyptic number.

12450305140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12450305140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16758536256).

12450305140 is an abundant number, since it is smaller than the sum of its proper divisors (21066767372).

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

12450305140 is a wasteful number, since it uses less digits than its factorization.

12450305140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22806 (or 22797 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 12450305140 in words is "twelve billion, four hundred fifty million, three hundred five thousand, one hundred forty".