1306240666344 has 192 divisors, whose sum is σ = 3606712012800. Its totient is φ = 426996662400.

The previous prime is 1306240666343. The next prime is 1306240666417. The reversal of 1306240666344 is 4436660426031.

It is a self number, because there is not a number n which added to its sum of digits gives 1306240666344.

It is not an unprimeable number, because it can be changed into a prime (1306240666343) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1257208977 + ... + 1257210015.

It is an arithmetic number, because the mean of its divisors is an integer number (18784958400).

Almost surely, 2^{1306240666344} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1306240666344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1803356006400).

1306240666344 is an abundant number, since it is smaller than the sum of its proper divisors (2300471346456).

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

1306240666344 is a wasteful number, since it uses less digits than its factorization.

1306240666344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 45.

The spelling of 1306240666344 in words is "one trillion, three hundred six billion, two hundred forty million, six hundred sixty-six thousand, three hundred forty-four".