1243841364480 has 640 divisors, whose sum is σ = 4780404034560. Its totient is φ = 271858728960.

The previous prime is 1243841364421. The next prime is 1243841364481. The reversal of 1243841364480 is 844631483421.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1243841364481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47211151 + ... + 47237489.

It is an arithmetic number, because the mean of its divisors is an integer number (7469381304).

Almost surely, 2^{1243841364480} is an apocalyptic number.

1243841364480 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 1243841364480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2390202017280).

1243841364480 is an abundant number, since it is smaller than the sum of its proper divisors (3536562670080).

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

1243841364480 is a wasteful number, since it uses less digits than its factorization.

1243841364480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26432 (or 26416 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 48.

It can be divided in two parts, 1243841 and 364480, that added together give a triangular number (1608321 = T₁₇₉₃).

The spelling of 1243841364480 in words is "one trillion, two hundred forty-three billion, eight hundred forty-one million, three hundred sixty-four thousand, four hundred eighty".