51716668342 has 8 divisors (see below), whose sum is σ = 77770406736. Its totient is φ = 25793199432.

The previous prime is 51716668319. The next prime is 51716668349. The reversal of 51716668342 is 24386661715.

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

It is a super-2 number, since 2×51716668342² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51716668349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32566378 + ... + 32567965.

It is an arithmetic number, because the mean of its divisors is an integer number (9721300842).

Almost surely, 2^51716668342 is an apocalyptic number.

51716668342 is a deficient number, since it is larger than the sum of its proper divisors (26053738394).

51716668342 is a wasteful number, since it uses less digits than its factorization.

51716668342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65134742.

The product of its digits is 1451520, while the sum is 49.

The spelling of 51716668342 in words is "fifty-one billion, seven hundred sixteen million, six hundred sixty-eight thousand, three hundred forty-two".