1243342164064 has 768 divisors, whose sum is σ = 3569869062144. Its totient is φ = 410722099200.

The previous prime is 1243342164019. The next prime is 1243342164121. The reversal of 1243342164064 is 4604612433421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1579849879 + ... + 1579850665.

It is an arithmetic number, because the mean of its divisors is an integer number (4648267008).

Almost surely, 2^{1243342164064} is an apocalyptic number.

1243342164064 is a gapful number since it is divisible by the number (14) 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 1243342164064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1784934531072).

1243342164064 is an abundant number, since it is smaller than the sum of its proper divisors (2326526898080).

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

1243342164064 is a wasteful number, since it uses less digits than its factorization.

1243342164064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

Adding to 1243342164064 its reverse (4604612433421), we get a palindrome (5847954597485).

The spelling of 1243342164064 in words is "one trillion, two hundred forty-three billion, three hundred forty-two million, one hundred sixty-four thousand, sixty-four".