8344218966438 has 64 divisors (see below), whose sum is σ = 17287195115520. Its totient is φ = 2683559313792.

The previous prime is 8344218966427. The next prime is 8344218966439. The reversal of 8344218966438 is 8346698124438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8344218966439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5366395 + ... + 6744377.

It is an arithmetic number, because the mean of its divisors is an integer number (270112423680).

Almost surely, 2^{8344218966438} is an apocalyptic number.

8344218966438 is an abundant number, since it is smaller than the sum of its proper divisors (8942976149082).

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

8344218966438 is a wasteful number, since it uses less digits than its factorization.

8344218966438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378341.

The product of its digits is 191102976, while the sum is 66.

The spelling of 8344218966438 in words is "eight trillion, three hundred forty-four billion, two hundred eighteen million, nine hundred sixty-six thousand, four hundred thirty-eight".