51210447688 has 32 divisors (see below), whose sum is σ = 97138530720. Its totient is φ = 25308400000.

The previous prime is 51210447683. The next prime is 51210447713. The reversal of 51210447688 is 88674401215.

51210447688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51210447683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165708 + ... + 360388.

It is an arithmetic number, because the mean of its divisors is an integer number (3035579085).

Almost surely, 2^51210447688 is an apocalyptic number.

It is an amenable number.

51210447688 is a deficient number, since it is larger than the sum of its proper divisors (45928083032).

51210447688 is a wasteful number, since it uses less digits than its factorization.

51210447688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195069 (or 195065 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 51210447688 in words is "fifty-one billion, two hundred ten million, four hundred forty-seven thousand, six hundred eighty-eight".