51005556060049 has 4 divisors (see below), whose sum is σ = 51119154180900. Its totient is φ = 50891957939200.

The previous prime is 51005556060007. The next prime is 51005556060101. The reversal of 51005556060049 is 94006065550015.

51005556060049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 26145509639824 + 24860046420225 = 5113268^2 + 4985985^2 .

It is a cyclic number.

It is not a de Polignac number, because 51005556060049 - 2¹⁵ = 51005556027281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51005556059990 and 51005556060008.

It is not an unprimeable number, because it can be changed into a prime (51005556069049) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 56799059752 + ... + 56799060649.

It is an arithmetic number, because the mean of its divisors is an integer number (12779788545225).

Almost surely, 2^{51005556060049} is an apocalyptic number.

It is an amenable number.

51005556060049 is a deficient number, since it is larger than the sum of its proper divisors (113598120851).

51005556060049 is a wasteful number, since it uses less digits than its factorization.

51005556060049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113598120850.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 51005556060049 in words is "fifty-one trillion, five billion, five hundred fifty-six million, sixty thousand, forty-nine".