51712764317 has 4 divisors (see below), whose sum is σ = 51713449536. Its totient is φ = 51712079100.

The previous prime is 51712764293. The next prime is 51712764331. The reversal of 51712764317 is 71346721715.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51712764317 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 (51712764347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213083 + ... + 385784.

It is an arithmetic number, because the mean of its divisors is an integer number (12928362384).

Almost surely, 2^51712764317 is an apocalyptic number.

It is an amenable number.

51712764317 is a deficient number, since it is larger than the sum of its proper divisors (685219).

51712764317 is an equidigital number, since it uses as much as digits as its factorization.

51712764317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685218.

The product of its digits is 246960, while the sum is 44.

The spelling of 51712764317 in words is "fifty-one billion, seven hundred twelve million, seven hundred sixty-four thousand, three hundred seventeen".