69785528213 has 2 divisors, whose sum is σ = 69785528214. Its totient is φ = 69785528212.

The previous prime is 69785528191. The next prime is 69785528257. The reversal of 69785528213 is 31282558796.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60192696964 + 9592831249 = 245342^2 + 97943^2 .

It is a cyclic number.

It is not a de Polignac number, because 69785528213 - 2²⁶ = 69718419349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69785528413) 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, 34892764106 + 34892764107.

It is an arithmetic number, because the mean of its divisors is an integer number (34892764107).

Almost surely, 2^69785528213 is an apocalyptic number.

It is an amenable number.

69785528213 is a deficient number, since it is larger than the sum of its proper divisors (1).

69785528213 is an equidigital number, since it uses as much as digits as its factorization.

69785528213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 56.

The spelling of 69785528213 in words is "sixty-nine billion, seven hundred eighty-five million, five hundred twenty-eight thousand, two hundred thirteen".