51123051174165 has 16 divisors (see below), whose sum is σ = 81798547051008. Its totient is φ = 27265072235456.

The previous prime is 51123051174161. The next prime is 51123051174203. The reversal of 51123051174165 is 56147115032115.

51123051174165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51123051174165 - 2² = 51123051174161 is a prime.

It is a super-2 number, since 2×51123051174165² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51123051174161) 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 15 ways as a sum of consecutive naturals, for example, 33929157 + ... + 35403866.

It is an arithmetic number, because the mean of its divisors is an integer number (5112409190688).

Almost surely, 2^{51123051174165} is an apocalyptic number.

It is an amenable number.

51123051174165 is a deficient number, since it is larger than the sum of its proper divisors (30675495876843).

51123051174165 is a wasteful number, since it uses less digits than its factorization.

51123051174165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69382188.

The product of its (nonzero) digits is 126000, while the sum is 42.

The spelling of 51123051174165 in words is "fifty-one trillion, one hundred twenty-three billion, fifty-one million, one hundred seventy-four thousand, one hundred sixty-five".