51005560055111 has 2 divisors, whose sum is σ = 51005560055112. Its totient is φ = 51005560055110.

The previous prime is 51005560055057. The next prime is 51005560055129. The reversal of 51005560055111 is 11155006550015.

51005560055111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51005560055111 - 2²² = 51005555860807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51005560055141) 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 as a sum of consecutive naturals, namely, 25502780027555 + 25502780027556.

It is an arithmetic number, because the mean of its divisors is an integer number (25502780027556).

Almost surely, 2^{51005560055111} is an apocalyptic number.

51005560055111 is a deficient number, since it is larger than the sum of its proper divisors (1).

51005560055111 is an equidigital number, since it uses as much as digits as its factorization.

51005560055111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 51005560055111 in words is "fifty-one trillion, five billion, five hundred sixty million, fifty-five thousand, one hundred eleven".