70217213069 has 2 divisors, whose sum is σ = 70217213070. Its totient is φ = 70217213068.

The previous prime is 70217213041. The next prime is 70217213071. The reversal of 70217213069 is 96031271207.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50683516900 + 19533696169 = 225130^2 + 139763^2 .

It is a cyclic number.

It is not a de Polignac number, because 70217213069 - 2²⁰ = 70216164493 is a prime.

It is a super-2 number, since 2×70217213069² (a number of 22 digits) contains 22 as substring.

Together with 70217213071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70217213669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35108606534 + 35108606535.

It is an arithmetic number, because the mean of its divisors is an integer number (35108606535).

Almost surely, 2^70217213069 is an apocalyptic number.

It is an amenable number.

70217213069 is a deficient number, since it is larger than the sum of its proper divisors (1).

70217213069 is an equidigital number, since it uses as much as digits as its factorization.

70217213069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 38.

The spelling of 70217213069 in words is "seventy billion, two hundred seventeen million, two hundred thirteen thousand, sixty-nine".