51711715311 has 4 divisors (see below), whose sum is σ = 68948953752. Its totient is φ = 34474476872.

The previous prime is 51711715283. The next prime is 51711715339. The reversal of 51711715311 is 11351711715.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (51711715283) and next prime (51711715339).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51711715311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51781715311) 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 3 ways as a sum of consecutive naturals, for example, 8618619216 + ... + 8618619221.

It is an arithmetic number, because the mean of its divisors is an integer number (17237238438).

Almost surely, 2^51711715311 is an apocalyptic number.

51711715311 is a deficient number, since it is larger than the sum of its proper divisors (17237238441).

51711715311 is a wasteful number, since it uses less digits than its factorization.

51711715311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17237238440.

The product of its digits is 3675, while the sum is 33.

The spelling of 51711715311 in words is "fifty-one billion, seven hundred eleven million, seven hundred fifteen thousand, three hundred eleven".