51006806823051 has 12 divisors (see below), whose sum is σ = 75066621362928. Its totient is φ = 33362942827344.

The previous prime is 51006806823031. The next prime is 51006806823061. The reversal of 51006806823051 is 15032860860015.

51006806823051 is a `hidden beast` number, since 510 + 0 + 6 + 8 + 0 + 6 + 82 + 3 + 0 + 51 = 666.

It is not a de Polignac number, because 51006806823051 - 2²³ = 51006798434443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51006806822988 and 51006806823006.

It is not an unprimeable number, because it can be changed into a prime (51006806823031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53466254055 + ... + 53466255008.

It is an arithmetic number, because the mean of its divisors is an integer number (6255551780244).

Almost surely, 2^{51006806823051} is an apocalyptic number.

51006806823051 is a deficient number, since it is larger than the sum of its proper divisors (24059814539877).

51006806823051 is a wasteful number, since it uses less digits than its factorization.

51006806823051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106932509122 (or 106932509119 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 51006806823051 in words is "fifty-one trillion, six billion, eight hundred six million, eight hundred twenty-three thousand, fifty-one".