69720773616679 has 2 divisors, whose sum is σ = 69720773616680. Its totient is φ = 69720773616678.

The previous prime is 69720773616673. The next prime is 69720773616709. The reversal of 69720773616679 is 97661637702796.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69720773616679 - 2⁹ = 69720773616167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69720773616673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34860386808339 + 34860386808340.

It is an arithmetic number, because the mean of its divisors is an integer number (34860386808340).

Almost surely, 2^{69720773616679} is an apocalyptic number.

69720773616679 is a deficient number, since it is larger than the sum of its proper divisors (1).

69720773616679 is an equidigital number, since it uses as much as digits as its factorization.

69720773616679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512284256, while the sum is 76.

The spelling of 69720773616679 in words is "sixty-nine trillion, seven hundred twenty billion, seven hundred seventy-three million, six hundred sixteen thousand, six hundred seventy-nine".