213347585777 has 2 divisors, whose sum is σ = 213347585778. Its totient is φ = 213347585776.

The previous prime is 213347585761. The next prime is 213347585819. The reversal of 213347585777 is 777585743312.

213347585777 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 can be written as a sum of positive squares in only one way, i.e., 212849358736 + 498227041 = 461356^2 + 22321^2 .

It is a cyclic number.

It is not a de Polignac number, because 213347585777 - 2⁴ = 213347585761 is a prime.

It is not a weakly prime, because it can be changed into another prime (213347588777) 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, 106673792888 + 106673792889.

It is an arithmetic number, because the mean of its divisors is an integer number (106673792889).

Almost surely, 2^213347585777 is an apocalyptic number.

It is an amenable number.

213347585777 is a deficient number, since it is larger than the sum of its proper divisors (1).

213347585777 is an equidigital number, since it uses as much as digits as its factorization.

213347585777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34574400, while the sum is 59.

The spelling of 213347585777 in words is "two hundred thirteen billion, three hundred forty-seven million, five hundred eighty-five thousand, seven hundred seventy-seven".