51660105560166 has 8 divisors (see below), whose sum is σ = 103320211120344. Its totient is φ = 17220035186720.

The previous prime is 51660105560027. The next prime is 51660105560213. The reversal of 51660105560166 is 66106550106615.

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

51660105560166 is an admirable number.

It is a super-4 number, since 4×51660105560166⁴ (a number of 56 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4305008796675 + ... + 4305008796686.

It is an arithmetic number, because the mean of its divisors is an integer number (12915026390043).

Almost surely, 2^{51660105560166} is an apocalyptic number.

51660105560166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51660105560166 is a wasteful number, since it uses less digits than its factorization.

51660105560166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8610017593366.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 51660105560166 in words is "fifty-one trillion, six hundred sixty billion, one hundred five million, five hundred sixty thousand, one hundred sixty-six".