72144115212 has 48 divisors (see below), whose sum is σ = 181833032192. Its totient is φ = 22131109440.

The previous prime is 72144115189. The next prime is 72144115237. The reversal of 72144115212 is 21251144127.

It is a self number, because there is not a number n which added to its sum of digits gives 72144115212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646948 + ... + 750219.

Almost surely, 2^72144115212 is an apocalyptic number.

It is an amenable number.

72144115212 is an abundant number, since it is smaller than the sum of its proper divisors (109688916980).

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

72144115212 is a wasteful number, since it uses less digits than its factorization.

72144115212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397518 (or 1397516 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

Adding to 72144115212 its reverse (21251144127), we get a palindrome (93395259339).

The spelling of 72144115212 in words is "seventy-two billion, one hundred forty-four million, one hundred fifteen thousand, two hundred twelve".