12243425440 has 48 divisors (see below), whose sum is σ = 28946679048. Its totient is φ = 4893715456.

The previous prime is 12243425437. The next prime is 12243425471. The reversal of 12243425440 is 4452434221.

It can be written as a sum of positive squares in 4 ways, for example, as 12106160784 + 137264656 = 110028^2 + 11716^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191814 + ... + 247546.

Almost surely, 2^12243425440 is an apocalyptic number.

12243425440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12243425440 is an abundant number, since it is smaller than the sum of its proper divisors (16703253608).

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

12243425440 is a wasteful number, since it uses less digits than its factorization.

12243425440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57121 (or 57113 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 12243425440 its reverse (4452434221), we get a palindrome (16695859661).

The spelling of 12243425440 in words is "twelve billion, two hundred forty-three million, four hundred twenty-five thousand, four hundred forty".