2443216123405 has 4 divisors (see below), whose sum is σ = 2931859348092. Its totient is φ = 1954572898720.

The previous prime is 2443216123393. The next prime is 2443216123423. The reversal of 2443216123405 is 5043216123442.

2443216123405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1716744580516 + 726471542889 = 1310246^2 + 852333^2 .

It is not a de Polignac number, because 2443216123405 - 2²⁵ = 2443182568973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244321612336 + ... + 244321612345.

It is an arithmetic number, because the mean of its divisors is an integer number (732964837023).

Almost surely, 2^{2443216123405} is an apocalyptic number.

It is an amenable number.

2443216123405 is a deficient number, since it is larger than the sum of its proper divisors (488643224687).

2443216123405 is an equidigital number, since it uses as much as digits as its factorization.

2443216123405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488643224686.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 2443216123405 its sum of digits (37), we get a palindrome (2443216123442).

The spelling of 2443216123405 in words is "two trillion, four hundred forty-three billion, two hundred sixteen million, one hundred twenty-three thousand, four hundred five".