51066265533165 has 128 divisors (see below), whose sum is σ = 91300202611200. Its totient is φ = 27081220976640.

The previous prime is 51066265533149. The next prime is 51066265533211. The reversal of 51066265533165 is 56133556266015.

51066265533165 is a `hidden beast` number, since 5 + 1 + 0 + 6 + 6 + 26 + 553 + 3 + 1 + 65 = 666.

It is not a de Polignac number, because 51066265533165 - 2⁴ = 51066265533149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 47770126251 + ... + 47770127319.

It is an arithmetic number, because the mean of its divisors is an integer number (713282832900).

Almost surely, 2^{51066265533165} is an apocalyptic number.

It is an amenable number.

51066265533165 is a deficient number, since it is larger than the sum of its proper divisors (40233937078035).

51066265533165 is a wasteful number, since it uses less digits than its factorization.

51066265533165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404 (or 3398 counting only the distinct ones).

The product of its (nonzero) digits is 14580000, while the sum is 54.

The spelling of 51066265533165 in words is "fifty-one trillion, sixty-six billion, two hundred sixty-five million, five hundred thirty-three thousand, one hundred sixty-five".