12144440521250 has 40 divisors (see below), whose sum is σ = 22929696857628. Its totient is φ = 4822317920000.

The previous prime is 12144440521249. The next prime is 12144440521307. The reversal of 12144440521250 is 5212504444121.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 284124179089 + 11860316342161 = 533033^2 + 3443881^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12144440521250.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35286971 + ... + 35629470.

Almost surely, 2^{12144440521250} is an apocalyptic number.

12144440521250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12144440521250 is a deficient number, since it is larger than the sum of its proper divisors (10785256336378).

12144440521250 is an equidigital number, since it uses as much as digits as its factorization.

12144440521250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70916600 (or 70916585 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 35.

Adding to 12144440521250 its reverse (5212504444121), we get a palindrome (17356944965371).

The spelling of 12144440521250 in words is "twelve trillion, one hundred forty-four billion, four hundred forty million, five hundred twenty-one thousand, two hundred fifty".