3243648416438 has 4 divisors (see below), whose sum is σ = 4865472624660. Its totient is φ = 1621824208218.

The previous prime is 3243648416399. The next prime is 3243648416461. The reversal of 3243648416438 is 8346148463423.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810912104108 + ... + 810912104111.

It is an arithmetic number, because the mean of its divisors is an integer number (1216368156165).

Almost surely, 2^{3243648416438} is an apocalyptic number.

3243648416438 is a deficient number, since it is larger than the sum of its proper divisors (1621824208222).

3243648416438 is a wasteful number, since it uses less digits than its factorization.

3243648416438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621824208221.

The product of its digits is 31850496, while the sum is 56.

The spelling of 3243648416438 in words is "three trillion, two hundred forty-three billion, six hundred forty-eight million, four hundred sixteen thousand, four hundred thirty-eight".