51688647325117 has 8 divisors (see below), whose sum is σ = 56395075020480. Its totient is φ = 46983462922560.

The previous prime is 51688647325109. The next prime is 51688647325181. The reversal of 51688647325117 is 71152374688615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51688647325117 - 2³ = 51688647325109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51688647025117) 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, 310736268 + ... + 310902565.

It is an arithmetic number, because the mean of its divisors is an integer number (7049384377560).

Almost surely, 2^{51688647325117} is an apocalyptic number.

It is an amenable number.

51688647325117 is a deficient number, since it is larger than the sum of its proper divisors (4706427695363).

51688647325117 is a wasteful number, since it uses less digits than its factorization.

51688647325117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621646403.

The product of its digits is 67737600, while the sum is 64.

The spelling of 51688647325117 in words is "fifty-one trillion, six hundred eighty-eight billion, six hundred forty-seven million, three hundred twenty-five thousand, one hundred seventeen".