51717186868722 has 24 divisors (see below), whose sum is σ = 109876653074256. Its totient is φ = 16224999801408.

The previous prime is 51717186868717. The next prime is 51717186868729. The reversal of 51717186868722 is 22786868171715.

51717186868722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51717186868722² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51717186868729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14912681908 + ... + 14912685375.

It is an arithmetic number, because the mean of its divisors is an integer number (4578193878094).

Almost surely, 2^{51717186868722} is an apocalyptic number.

51717186868722 is an abundant number, since it is smaller than the sum of its proper divisors (58159466205534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51717186868722 is a wasteful number, since it uses less digits than its factorization.

51717186868722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29825367322 (or 29825367305 counting only the distinct ones).

The product of its digits is 126443520, while the sum is 69.

The spelling of 51717186868722 in words is "fifty-one trillion, seven hundred seventeen billion, one hundred eighty-six million, eight hundred sixty-eight thousand, seven hundred twenty-two".