438173421312 has 216 divisors, whose sum is σ = 1351441389312. Its totient is φ = 124968550400.

The previous prime is 438173421307. The next prime is 438173421319. The reversal of 438173421312 is 213124371834.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438173421319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2351737 + ... + 2531207.

Almost surely, 2^438173421312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 438173421312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (675720694656).

438173421312 is an abundant number, since it is smaller than the sum of its proper divisors (913267968000).

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

438173421312 is a wasteful number, since it uses less digits than its factorization.

438173421312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179535 (or 179504 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The spelling of 438173421312 in words is "four hundred thirty-eight billion, one hundred seventy-three million, four hundred twenty-one thousand, three hundred twelve".