1243326363456 has 112 divisors (see below), whose sum is σ = 3377108962304. Its totient is φ = 403484530176.

The previous prime is 1243326363449. The next prime is 1243326363569. The reversal of 1243326363456 is 6543636233421.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2289321 + ... + 2779863.

It is an arithmetic number, because the mean of its divisors is an integer number (30152758592).

Almost surely, 2^{1243326363456} is an apocalyptic number.

1243326363456 is a gapful number since it is divisible by the number (16) 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 1243326363456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1688554481152).

1243326363456 is an abundant number, since it is smaller than the sum of its proper divisors (2133782598848).

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

1243326363456 is a wasteful number, since it uses less digits than its factorization.

1243326363456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490908 (or 490898 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 48.

The spelling of 1243326363456 in words is "one trillion, two hundred forty-three billion, three hundred twenty-six million, three hundred sixty-three thousand, four hundred fifty-six".