438898218979072 has 36 divisors (see below), whose sum is σ = 877470394635856. Its totient is φ = 219101329520640.

The previous prime is 438898218979039. The next prime is 438898218979139. The reversal of 438898218979072 is 270979812898834.

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, 1358353653 + ... + 1358676724.

Almost surely, 2^{438898218979072} is an apocalyptic number.

It is an amenable number.

438898218979072 is a deficient number, since it is larger than the sum of its proper divisors (438572175656784).

438898218979072 is an equidigital number, since it uses as much as digits as its factorization.

438898218979072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2717031024 (or 2717031010 counting only the distinct ones).

The product of its (nonzero) digits is 7023034368, while the sum is 85.

The spelling of 438898218979072 in words is "four hundred thirty-eight trillion, eight hundred ninety-eight billion, two hundred eighteen million, nine hundred seventy-nine thousand, seventy-two".