212371686739 has 2 divisors, whose sum is σ = 212371686740. Its totient is φ = 212371686738.

The previous prime is 212371686727. The next prime is 212371686809. The reversal of 212371686739 is 937686173212.

212371686739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212371686739 - 2²³ = 212363298131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212371686739.

It is not a weakly prime, because it can be changed into another prime (212372686739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106185843369 + 106185843370.

It is an arithmetic number, because the mean of its divisors is an integer number (106185843370).

Almost surely, 2^212371686739 is an apocalyptic number.

212371686739 is a deficient number, since it is larger than the sum of its proper divisors (1).

212371686739 is an equidigital number, since it uses as much as digits as its factorization.

212371686739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 55.

The spelling of 212371686739 in words is "two hundred twelve billion, three hundred seventy-one million, six hundred eighty-six thousand, seven hundred thirty-nine".