51056005005 has 24 divisors (see below), whose sum is σ = 88876909368. Its totient is φ = 27112997376.

The previous prime is 51056005001. The next prime is 51056005019. The reversal of 51056005005 is 50050065015.

51056005005 is a `hidden beast` number, since 5 + 1 + 0 + 5 + 600 + 50 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 335109636 + 50720895369 = 18306^2 + 225213^2 .

It is not a de Polignac number, because 51056005005 - 2² = 51056005001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51056005005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51056005001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2424232 + ... + 2445201.

It is an arithmetic number, because the mean of its divisors is an integer number (3703204557).

Almost surely, 2^51056005005 is an apocalyptic number.

It is an amenable number.

51056005005 is a deficient number, since it is larger than the sum of its proper divisors (37820904363).

51056005005 is a wasteful number, since it uses less digits than its factorization.

51056005005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4869677 (or 4869674 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The spelling of 51056005005 in words is "fifty-one billion, fifty-six million, five thousand, five".