72116431312 has 20 divisors (see below), whose sum is σ = 147079564480. Its totient is φ = 34160414688.

The previous prime is 72116431229. The next prime is 72116431327. The reversal of 72116431312 is 21313461127.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 118612248 + ... + 118612855.

It is an arithmetic number, because the mean of its divisors is an integer number (7353978224).

Almost surely, 2^72116431312 is an apocalyptic number.

It is an amenable number.

72116431312 is an abundant number, since it is smaller than the sum of its proper divisors (74963133168).

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

72116431312 is a wasteful number, since it uses less digits than its factorization.

72116431312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237225130 (or 237225124 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

Adding to 72116431312 its reverse (21313461127), we get a palindrome (93429892439).

The spelling of 72116431312 in words is "seventy-two billion, one hundred sixteen million, four hundred thirty-one thousand, three hundred twelve".