51006060055505 has 4 divisors (see below), whose sum is σ = 61207272066612. Its totient is φ = 40804848044400.

The previous prime is 51006060055487. The next prime is 51006060055549. The reversal of 51006060055505 is 50555006060015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13024563409936 + 37981496645569 = 3608956^2 + 6162913^2 .

It is not a de Polignac number, because 51006060055505 - 2³⁸ = 50731182148561 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5100606005546 + ... + 5100606005555.

It is an arithmetic number, because the mean of its divisors is an integer number (15301818016653).

Almost surely, 2^{51006060055505} is an apocalyptic number.

It is an amenable number.

51006060055505 is a deficient number, since it is larger than the sum of its proper divisors (10201212011107).

51006060055505 is a wasteful number, since it uses less digits than its factorization.

51006060055505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10201212011106.

The product of its (nonzero) digits is 112500, while the sum is 38.

The spelling of 51006060055505 in words is "fifty-one trillion, six billion, sixty million, fifty-five thousand, five hundred five".