69427697351209 has 2 divisors, whose sum is σ = 69427697351210. Its totient is φ = 69427697351208.

The previous prime is 69427697351197. The next prime is 69427697351219. The reversal of 69427697351209 is 90215379672496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64519899575184 + 4907797776025 = 8032428^2 + 2215355^2 .

It is a cyclic number.

It is not a de Polignac number, because 69427697351209 - 2²⁹ = 69427160480297 is a prime.

It is not a weakly prime, because it can be changed into another prime (69427697351219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34713848675604 + 34713848675605.

It is an arithmetic number, because the mean of its divisors is an integer number (34713848675605).

Almost surely, 2^{69427697351209} is an apocalyptic number.

It is an amenable number.

69427697351209 is a deficient number, since it is larger than the sum of its proper divisors (1).

69427697351209 is an equidigital number, since it uses as much as digits as its factorization.

69427697351209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 308629440, while the sum is 70.

The spelling of 69427697351209 in words is "sixty-nine trillion, four hundred twenty-seven billion, six hundred ninety-seven million, three hundred fifty-one thousand, two hundred nine".