72143438144 has 14 divisors (see below), whose sum is σ = 143159635194. Its totient is φ = 36071719040.

The previous prime is 72143438141. The next prime is 72143438183. The reversal of 72143438144 is 44183434127.

It can be written as a sum of positive squares in only one way, i.e., 68179476544 + 3963961600 = 261112^2 + 62960^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72143438141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563620547 + ... + 563620674.

Almost surely, 2^72143438144 is an apocalyptic number.

It is an amenable number.

72143438144 is a deficient number, since it is larger than the sum of its proper divisors (71016197050).

72143438144 is a wasteful number, since it uses less digits than its factorization.

72143438144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127241233 (or 1127241223 counting only the distinct ones).

The product of its digits is 258048, while the sum is 41.

The spelling of 72143438144 in words is "seventy-two billion, one hundred forty-three million, four hundred thirty-eight thousand, one hundred forty-four".