1243444310406 has 160 divisors (see below), whose sum is σ = 2917370364480. Its totient is φ = 395339616000.

The previous prime is 1243444310393. The next prime is 1243444310447. The reversal of 1243444310406 is 6040134443421.

1243444310406 is a `hidden beast` number, since 1 + 243 + 4 + 4 + 4 + 3 + 1 + 0 + 406 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 231077836 + ... + 231083216.

It is an arithmetic number, because the mean of its divisors is an integer number (18233564778).

Almost surely, 2^{1243444310406} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1243444310406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458685182240).

1243444310406 is an abundant number, since it is smaller than the sum of its proper divisors (1673926054074).

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

1243444310406 is a wasteful number, since it uses less digits than its factorization.

1243444310406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6012 (or 6003 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 1243444310406 its reverse (6040134443421), we get a palindrome (7283578753827).

The spelling of 1243444310406 in words is "one trillion, two hundred forty-three billion, four hundred forty-four million, three hundred ten thousand, four hundred six".