51715648173 has 16 divisors (see below), whose sum is σ = 78810596480. Its totient is φ = 29549624256.

The previous prime is 51715648151. The next prime is 51715648213. The reversal of 51715648173 is 37184651715.

51715648173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51715648173 - 2¹² = 51715644077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51715648073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227523 + ... + 393951.

It is an arithmetic number, because the mean of its divisors is an integer number (4925662280).

Almost surely, 2^51715648173 is an apocalyptic number.

It is an amenable number.

51715648173 is a deficient number, since it is larger than the sum of its proper divisors (27094948307).

51715648173 is a wasteful number, since it uses less digits than its factorization.

51715648173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181236.

The product of its digits is 705600, while the sum is 48.

The spelling of 51715648173 in words is "fifty-one billion, seven hundred fifteen million, six hundred forty-eight thousand, one hundred seventy-three".