51066051105161 has 4 divisors (see below), whose sum is σ = 51361230591492. Its totient is φ = 50770871618832.

The previous prime is 51066051105151. The next prime is 51066051105233. The reversal of 51066051105161 is 16150115066015.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34252926760000 + 16813124345161 = 5852600^2 + 4100381^2 .

It is a cyclic number.

It is not a de Polignac number, because 51066051105161 - 2¹⁴ = 51066051088777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51066051105151) 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, 147589742906 + ... + 147589743251.

It is an arithmetic number, because the mean of its divisors is an integer number (12840307647873).

Almost surely, 2^{51066051105161} is an apocalyptic number.

It is an amenable number.

51066051105161 is a deficient number, since it is larger than the sum of its proper divisors (295179486331).

51066051105161 is a wasteful number, since it uses less digits than its factorization.

51066051105161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295179486330.

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 51066051105161 in words is "fifty-one trillion, sixty-six billion, fifty-one million, one hundred five thousand, one hundred sixty-one".