69971720543 has 2 divisors, whose sum is σ = 69971720544. Its totient is φ = 69971720542.

The previous prime is 69971720443. The next prime is 69971720573. The reversal of 69971720543 is 34502717996.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69971720543 - 2¹² = 69971716447 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69971720573) 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, 34985860271 + 34985860272.

It is an arithmetic number, because the mean of its divisors is an integer number (34985860272).

Almost surely, 2^69971720543 is an apocalyptic number.

69971720543 is a deficient number, since it is larger than the sum of its proper divisors (1).

69971720543 is an equidigital number, since it uses as much as digits as its factorization.

69971720543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The spelling of 69971720543 in words is "sixty-nine billion, nine hundred seventy-one million, seven hundred twenty thousand, five hundred forty-three".