2503243251440 has 20 divisors (see below), whose sum is σ = 5820040559784. Its totient is φ = 1001297300544.

The previous prime is 2503243251361. The next prime is 2503243251479. The reversal of 2503243251440 is 441523423052.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 2503243251440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15645270242 + ... + 15645270401.

Almost surely, 2^{2503243251440} is an apocalyptic number.

2503243251440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2503243251440 is an abundant number, since it is smaller than the sum of its proper divisors (3316797308344).

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

2503243251440 is a wasteful number, since it uses less digits than its factorization.

2503243251440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31290540656 (or 31290540650 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 2503243251440 its reverse (441523423052), we get a palindrome (2944766674492).

The spelling of 2503243251440 in words is "two trillion, five hundred three billion, two hundred forty-three million, two hundred fifty-one thousand, four hundred forty".