51214647786499 has 2 divisors, whose sum is σ = 51214647786500. Its totient is φ = 51214647786498.

The previous prime is 51214647786461. The next prime is 51214647786509. The reversal of 51214647786499 is 99468774641215.

51214647786499 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 51214647786499 - 2⁴³ = 42418554764291 is a prime.

It is not a weakly prime, because it can be changed into another prime (51214647786899) 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, 25607323893249 + 25607323893250.

It is an arithmetic number, because the mean of its divisors is an integer number (25607323893250).

Almost surely, 2^{51214647786499} is an apocalyptic number.

51214647786499 is a deficient number, since it is larger than the sum of its proper divisors (1).

51214647786499 is an equidigital number, since it uses as much as digits as its factorization.

51214647786499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 731566080, while the sum is 73.

The spelling of 51214647786499 in words is "fifty-one trillion, two hundred fourteen billion, six hundred forty-seven million, seven hundred eighty-six thousand, four hundred ninety-nine".