51566005065065 has 8 divisors (see below), whose sum is σ = 61880176643208. Its totient is φ = 41252157008640.

The previous prime is 51566005065011. The next prime is 51566005065121. The reversal of 51566005065065 is 56056050066515.

51566005065065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2465769856729 + 49100235208336 = 1570277^2 + 7007156^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-51566005065065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 80529632 + ... + 81167441.

It is an arithmetic number, because the mean of its divisors is an integer number (7735022080401).

Almost surely, 2^{51566005065065} is an apocalyptic number.

It is an amenable number.

51566005065065 is a deficient number, since it is larger than the sum of its proper divisors (10314171578143).

51566005065065 is a wasteful number, since it uses less digits than its factorization.

51566005065065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161760859.

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 51566005065065 in words is "fifty-one trillion, five hundred sixty-six billion, five million, sixty-five thousand, sixty-five".