1216333438743 has 16 divisors (see below), whose sum is σ = 1647634766720. Its totient is φ = 797984817696.

The previous prime is 1216333438741. The next prime is 1216333438763. The reversal of 1216333438743 is 3478343336121.

It is not a de Polignac number, because 1216333438743 - 2¹ = 1216333438741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1216333438692 and 1216333438701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216333438741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2834413 + ... + 3235206.

It is an arithmetic number, because the mean of its divisors is an integer number (102977172920).

Almost surely, 2^{1216333438743} is an apocalyptic number.

1216333438743 is a deficient number, since it is larger than the sum of its proper divisors (431301327977).

1216333438743 is an equidigital number, since it uses as much as digits as its factorization.

1216333438743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6070686.

The product of its digits is 2612736, while the sum is 48.

The spelling of 1216333438743 in words is "one trillion, two hundred sixteen billion, three hundred thirty-three million, four hundred thirty-eight thousand, seven hundred forty-three".