51072016216 has 32 divisors (see below), whose sum is σ = 109192436640. Its totient is φ = 22185128448.

The previous prime is 51072016211. The next prime is 51072016217. The reversal of 51072016216 is 61261027015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51072016211) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14441676 + ... + 14445211.

It is an arithmetic number, because the mean of its divisors is an integer number (3412263645).

Almost surely, 2^51072016216 is an apocalyptic number.

It is an amenable number.

51072016216 is an abundant number, since it is smaller than the sum of its proper divisors (58120420424).

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

51072016216 is a wasteful number, since it uses less digits than its factorization.

51072016216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28886923 (or 28886919 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 51072016216 in words is "fifty-one billion, seventy-two million, sixteen thousand, two hundred sixteen".