51015055166111 has 2 divisors, whose sum is σ = 51015055166112. Its totient is φ = 51015055166110.

The previous prime is 51015055166107. The next prime is 51015055166167. The reversal of 51015055166111 is 11166155051015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51015055166111 - 2² = 51015055166107 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51015055166711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25507527583055 + 25507527583056.

It is an arithmetic number, because the mean of its divisors is an integer number (25507527583056).

Almost surely, 2^{51015055166111} is an apocalyptic number.

51015055166111 is a deficient number, since it is larger than the sum of its proper divisors (1).

51015055166111 is an equidigital number, since it uses as much as digits as its factorization.

51015055166111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22500, while the sum is 38.

The spelling of 51015055166111 in words is "fifty-one trillion, fifteen billion, fifty-five million, one hundred sixty-six thousand, one hundred eleven".